diff --git a/addons/account/account_invoice_view.xml b/addons/account/account_invoice_view.xml
index 8516fcd96ae..1f0ce38a017 100644
--- a/addons/account/account_invoice_view.xml
+++ b/addons/account/account_invoice_view.xml
@@ -143,13 +143,11 @@
             <field name="arch" type="xml">
                 <form string="Supplier Invoice" version="7.0">
                 <header>
-                    <span groups="base.group_user">
-                        <button name="invoice_open" states="draft,proforma2" string="Validate" class="oe_highlight"/>
-                        <button name="%(action_account_invoice_refund)d" type='action' string='Ask Refund' states='open,paid' />
+                        <button name="invoice_open" states="draft,proforma2" string="Validate" class="oe_highlight" groups="account.group_account_invoice"/>
+                        <button name="%(action_account_invoice_refund)d" type='action' string='Ask Refund' states='open,paid' groups="account.group_account_invoice"/>
                         <button name="invoice_cancel" states="draft,proforma2,sale,open" string="Cancel" groups="base.group_no_one"/>
-                        <button name="action_cancel_draft" states="cancel" string="Set to Draft" type="object"/>
+                        <button name="action_cancel_draft" states="cancel" string="Set to Draft" type="object" groups="account.group_account_invoice"/>
                         <button name='%(action_account_state_open)d' type='action' string='Re-Open' groups="account.group_account_invoice" attrs="{'invisible':['|', ('state','&lt;&gt;','paid'), ('reconciled', '=', True)]}" help="This button only appears when the state of the invoice is 'paid' (showing that it has been fully reconciled) and auto-computed boolean 'reconciled' is False (depicting that it's not the case anymore). In other words, the invoice has been dereconciled and it does not fit anymore the 'paid' state. You should press this button to re-open it and let it continue its normal process after having resolved the eventual exceptions it may have created."/>
-                    </span>
                     <field name="state" widget="statusbar" statusbar_visible="draft,open,paid" statusbar_colors='{"proforma":"blue","proforma2":"blue"}'/>
                 </header>
                 <sheet string="Supplier Invoice">
@@ -291,20 +289,18 @@
             <field name="arch" type="xml">
                 <form string="Invoice" version="7.0">
                 <header>
-                    <span groups="base.group_user">
-                        <button name="action_invoice_sent" type="object" string="Send by Email" attrs="{'invisible':['|',('sent','=',True), ('state', '!=', 'open')]}" class="oe_highlight"/>
-                        <button name="invoice_print" string="Print Invoice" type="object" attrs="{'invisible':['|',('sent','=',True), ('state', '!=', 'open')]}" class="oe_highlight"/>
-                        <button name="action_invoice_sent" type="object" string="Send by Email" attrs="{'invisible':['|',('sent','=',False), ('state', '!=', 'open')]}"/>
-                        <button name="invoice_print" string="Print Invoice" type="object" attrs="{'invisible':['|',('sent','=',False), ('state', '!=', 'open')]}"/>
-                        <button name="invoice_open" states="draft" string="Validate" class="oe_highlight"/>
-                        <button name="invoice_open" states="proforma2" string="Validate"/>
-                        <button name="invoice_proforma2" states="draft" string="PRO-FORMA" groups="account.group_proforma_invoices"/>
-                        <button name="%(action_account_invoice_refund)d" type='action' string='Refund Invoice' states='open,proforma2,paid'/>
-                        <button name="invoice_cancel" states="draft,proforma2,open" string="Cancel" groups="base.group_no_one"/>
-                        <button name="action_cancel_draft" states="cancel" string="Reset to Draft" type="object"/>
-                        <button name='%(action_account_state_open)d' type='action' string='Re-Open' groups="account.group_account_invoice" attrs="{'invisible':['|', ('state','&lt;&gt;','paid'), ('reconciled', '=', True)]}" help="This button only appears when the state of the invoice is 'paid' (showing that it has been fully reconciled) and auto-computed boolean 'reconciled' is False (depicting that it's not the case anymore). In other words, the invoice has been dereconciled and it does not fit anymore the 'paid' state. You should press this button to re-open it and let it continue its normal process after having resolved the eventual exceptions it may have created."/>
-                        <!--button name="%(account_invoices)d" string="Print Invoice" type="action" states="open,paid,proforma,sale,proforma2"/-->
-                    </span>
+                    <button name="action_invoice_sent" type="object" string="Send by Email" attrs="{'invisible':['|',('sent','=',True), ('state', '!=', 'open')]}" class="oe_highlight" groups="base.group_user"/>
+                    <button name="invoice_print" string="Print Invoice" type="object" attrs="{'invisible':['|',('sent','=',True), ('state', '!=', 'open')]}" class="oe_highlight" groups="base.group_user"/>
+                    <button name="action_invoice_sent" type="object" string="Send by Email" attrs="{'invisible':['|',('sent','=',False), ('state', '!=', 'open')]}" groups="base.group_user"/>
+                    <button name="invoice_print" string="Print Invoice" type="object" attrs="{'invisible':['|',('sent','=',False), ('state', '!=', 'open')]}" groups="base.group_user"/>
+                    <button name="invoice_open" states="draft" string="Validate" class="oe_highlight" groups="base.group_user"/>
+                    <button name="invoice_open" states="proforma2" string="Validate" groups="base.group_user"/>
+                    <button name="invoice_proforma2" states="draft" string="PRO-FORMA" groups="account.group_proforma_invoices"/>
+                    <button name="%(action_account_invoice_refund)d" type='action' string='Refund Invoice' states='open,proforma2,paid' groups="base.group_user"/>
+                    <button name="invoice_cancel" states="draft,proforma2,open" string="Cancel" groups="base.group_no_one"/>
+                    <button name="action_cancel_draft" states="cancel" string="Reset to Draft" type="object" groups="base.group_user"/>
+                    <button name='%(action_account_state_open)d' type='action' string='Re-Open' groups="account.group_account_invoice" attrs="{'invisible':['|', ('state','&lt;&gt;','paid'), ('reconciled', '=', True)]}" help="This button only appears when the state of the invoice is 'paid' (showing that it has been fully reconciled) and auto-computed boolean 'reconciled' is False (depicting that it's not the case anymore). In other words, the invoice has been dereconciled and it does not fit anymore the 'paid' state. You should press this button to re-open it and let it continue its normal process after having resolved the eventual exceptions it may have created."/>
+                    <!--button name="%(account_invoices)d" string="Print Invoice" type="action" states="open,paid,proforma,sale,proforma2"/-->
                     <field name="state" widget="statusbar" nolabel="1" statusbar_visible="draft,open,paid" statusbar_colors='{"proforma":"blue","proforma2":"blue"}'/>
                 </header>
                 <sheet string="Invoice">
diff --git a/addons/crm_claim/crm_claim_view.xml b/addons/crm_claim/crm_claim_view.xml
index 93e07f95eef..0d9b5adef43 100644
--- a/addons/crm_claim/crm_claim_view.xml
+++ b/addons/crm_claim/crm_claim_view.xml
@@ -102,23 +102,22 @@
             <field name="arch" type="xml">
                 <form string="Claim" version="7.0">
                 <header>
-                    <span groups="base.group_user">
-                        <button name="case_open" string="Open" type="object" class="oe_highlight"
-                                states="draft,pending" />
-                        <button name="case_close" string="Done" type="object" class="oe_highlight"
-                                states="open,pending"/>
-                        <button name="case_refuse" string="Refuse" type="object" class="oe_highlight"
-                                states="draft,open,pending"/>
-                        <button name="stage_previous" string="Previous Stage" type="object"
-                                states="open,pending" icon="gtk-go-back" attrs="{'invisible': [('stage_id','=', False)]}"/>
-                        <button name="stage_next" string="Next Stage" type="object"
-                                states="open,pending" icon="gtk-go-forward" attrs="{'invisible': [('stage_id','=', False)]}"/>
-                        <button name="case_reset" string="Reset to Draft" type="object" 
-                                states="cancel,done"/>
-                        <button name="case_cancel" string="Cancel" type="object" 
-                                states="draft,open,pending"/>
-                    </span>
-                    <field name="stage_id" widget="statusbar"/>
+                    <button name="case_open" string="Open" type="object" class="oe_highlight"
+                            states="draft,pending" groups="base.group_user"/>
+                    <button name="case_close" string="Done" type="object" class="oe_highlight"
+                            states="open,pending" groups="base.group_user"/>
+                    <button name="case_refuse" string="Refuse" type="object" class="oe_highlight"
+                            states="draft,open,pending" groups="base.group_user"/>
+                    <button name="stage_previous" string="Previous Stage" type="object" groups="base.group_user" 
+                            states="open,pending" icon="gtk-go-back" attrs="{'invisible': [('stage_id','=', False)]}"/>
+                    <button name="stage_next" string="Next Stage" type="object" groups="base.group_user"
+                            states="open,pending" icon="gtk-go-forward" attrs="{'invisible': [('stage_id','=', False)]}"/>
+                    <button name="case_reset" string="Reset to Draft" type="object" groups="base.group_user"
+                            states="cancel,done"/>
+                    <button name="case_cancel" string="Cancel" type="object"  groups="base.group_user"
+                            states="draft,open,pending"/>
+                    <field name="stage_id" widget="statusbar"
+                            on_change="onchange_stage_id(stage_id)"/>
                 </header>
                 <sheet string="Claims">
                     <group>
diff --git a/addons/event/event_view.xml b/addons/event/event_view.xml
index a176cc47230..2b275898383 100644
--- a/addons/event/event_view.xml
+++ b/addons/event/event_view.xml
@@ -100,12 +100,10 @@
             <field name="arch" type="xml">
                 <form string="Events" version="7.0">
                     <header>
-                        <span groups="base.group_user">
-                            <button string="Confirm Event" name="button_confirm" states="draft" type="object" class="oe_highlight"/>
-                            <button string="Event Ended" name="button_done" states="confirm" type="object" class="oe_highlight"/>
-                            <button string="Set To Draft" name="button_draft" states="cancel,done" type="object" />
-                            <button string="Cancel Event" name="button_cancel" states="draft,confirm" type="object"/>
-                        </span>
+                        <button string="Confirm Event" name="button_confirm" states="draft" type="object" class="oe_highlight" groups="base.group_user"/>
+                        <button string="Event Ended" name="button_done" states="confirm" type="object" class="oe_highlight" groups="base.group_user"/>
+                        <button string="Set To Draft" name="button_draft" states="cancel,done" type="object" groups="base.group_user"/>
+                        <button string="Cancel Event" name="button_cancel" states="draft,confirm" type="object" groups="base.group_user"/>
                         <field name="state" widget="statusbar" statusbar_visible="draft,confirm,done"/>
                     </header>
                     <sheet>
diff --git a/addons/hr_evaluation/hr_evaluation_view.xml b/addons/hr_evaluation/hr_evaluation_view.xml
index fb9d287ea77..7164e7d9415 100644
--- a/addons/hr_evaluation/hr_evaluation_view.xml
+++ b/addons/hr_evaluation/hr_evaluation_view.xml
@@ -283,7 +283,7 @@
                 <form string="Interview Appraisal" version="7.0">
                     <header>
                         <button string="Cancel" name="survey_req_cancel" type="object"
-                            states="draft,waiting_answer"/>
+                            states="draft,waiting_answer" class="oe_left"/>
                         <button string="Print Survey" name="action_print_survey"  type="object"
                             states="draft" context="{'survey_id': survey_id, 'response_id': [response], 'response_no':0}"
                             attrs="{'readonly':[('survey_id','=',False)]}" class="oe_highlight"/>
diff --git a/addons/project/project_view.xml b/addons/project/project_view.xml
index b4611ce2ffd..8801e18adf2 100644
--- a/addons/project/project_view.xml
+++ b/addons/project/project_view.xml
@@ -378,20 +378,18 @@
             <field name="arch" type="xml">
                 <form string="Project" version="7.0">
                     <header>
-                        <span groups="base.group_user">
-                            <!--
-                            <button name="do_open" string="Start Task" type="object"
-                                    states="draft,pending" class="oe_highlight"/>
-                            <button name="do_draft" string="Draft" type="object"
-                                    states="cancel,done"/>
-                            -->
-                            <button name="%(action_project_task_reevaluate)d" string="Reactivate" type="action"
-                                    states="cancelled,done" context="{'button_reactivate':True}"/>
-                            <button name="action_close" string="Done" type="object"
-                                    states="draft,open,pending"/>
-                            <button name="do_cancel" string="Cancel" type="object"
-                                    states="draft,open,pending"/>
-                        </span>
+                        <!--
+                        <button name="do_open" string="Start Task" type="object"
+                                states="draft,pending" class="oe_highlight"/>
+                        <button name="do_draft" string="Draft" type="object"
+                                states="cancel,done"/>
+                        -->
+                        <button name="%(action_project_task_reevaluate)d" string="Reactivate" type="action"
+                                states="cancelled,done" context="{'button_reactivate':True}" groups="base.group_user"/>
+                        <button name="action_close" string="Done" type="object"
+                                states="draft,open,pending" groups="base.group_user"/>
+                        <button name="do_cancel" string="Cancel" type="object"
+                                states="draft,open,pending" groups="base.group_user"/>
                         <field name="stage_id" widget="statusbar" clickable="True"/>
                     </header>
                     <sheet string="Task">
diff --git a/addons/project_issue/project_issue_view.xml b/addons/project_issue/project_issue_view.xml
index 818d4e6f556..6ff5388ce4a 100644
--- a/addons/project_issue/project_issue_view.xml
+++ b/addons/project_issue/project_issue_view.xml
@@ -95,14 +95,12 @@
             <field name="arch" type="xml">
                 <form string="Issue" version="7.0">
                 <header>
-                    <span groups="base.group_user">
-                        <button name="case_close" string="Done" type="object"
-                                states="open"/>
-                         <button name="case_close" string="Done" type="object"
-                                states="draft,pending"/>
-                        <button name="case_cancel" string="Cancel" type="object"
-                                states="draft,open,pending"/>
-                    </span>
+                    <button name="case_close" string="Done" type="object" 
+                            states="open" groups="base.group_user"/>
+                    <button name="case_close" string="Done" type="object"
+                            states="draft,pending" groups="base.group_user"/>
+                    <button name="case_cancel" string="Cancel" type="object"
+                            states="draft,open,pending" groups="base.group_user"/>
                     <field name="stage_id" widget="statusbar" clickable="True"/>
                 </header>
                 <sheet string="Issue">
diff --git a/addons/sale/sale_view.xml b/addons/sale/sale_view.xml
index 4aac3ce3a9f..4d57dfcf9e0 100644
--- a/addons/sale/sale_view.xml
+++ b/addons/sale/sale_view.xml
@@ -147,23 +147,21 @@
             <field name="arch" type="xml">
                 <form string="Sales Order" version="7.0">
                     <header>
-                        <span groups="base.group_user">
-                            <button name="invoice_recreate" states="invoice_except" string="Recreate Invoice"/>
-                            <button name="invoice_corrected" states="invoice_except" string="Ignore Exception"/>
-                            <button name="action_quotation_send" string="Send by Mail" type="object" states="draft" class="oe_highlight"/>
-                            <button name="action_quotation_send" string="Send by Mail" type="object" states="sent"/>
-                            <button name="print_quotation" string="Print" type="object" states="draft" class="oe_highlight"/>
-                            <button name="print_quotation" string="Print" type="object" states="sent"/>
-                            <button name="action_button_confirm" states="draft" string="Confirm" type="object"/>
-                            <button name="action_button_confirm" states="sent" string="Confirm" class="oe_highlight" type="object"/>
-                            <button name="action_view_invoice" string="View Invoice" type="object" class="oe_highlight"
-                              attrs="{'invisible': [('invoice_exists', '=', False)]}"/>
-                            <button name="%(action_view_sale_advance_payment_inv)d" string="Create Invoice"
-                                type="action" states="manual" class="oe_highlight"/>
-                            <button name="cancel" states="draft,sent" string="Cancel"/>
-                            <button name="action_cancel" states="manual,progress" string="Cancel" type="object"/>
-                            <button name="invoice_cancel" states="invoice_except" string="Cancel"/>
-                        </span>
+                        <button name="invoice_recreate" states="invoice_except" string="Recreate Invoice" groups="base.group_user"/>
+                        <button name="invoice_corrected" states="invoice_except" string="Ignore Exception" groups="base.group_user"/>
+                        <button name="action_quotation_send" string="Send by Mail" type="object" states="draft" class="oe_highlight" groups="base.group_user"/>
+                        <button name="action_quotation_send" string="Send by Mail" type="object" states="sent" groups="base.group_user"/>
+                        <button name="print_quotation" string="Print" type="object" states="draft" class="oe_highlight" groups="base.group_user"/>
+                        <button name="print_quotation" string="Print" type="object" states="sent" groups="base.group_user"/>
+                        <button name="action_button_confirm" states="draft" string="Confirm" type="object" groups="base.group_user"/>
+                        <button name="action_button_confirm" states="sent" string="Confirm" class="oe_highlight" type="object" groups="base.group_user"/>
+                        <button name="action_view_invoice" string="View Invoice" type="object" class="oe_highlight"
+                            attrs="{'invisible': [('invoice_exists', '=', False)]}" groups="base.group_user"/>
+                        <button name="%(action_view_sale_advance_payment_inv)d" string="Create Invoice"
+                            type="action" states="manual" class="oe_highlight" groups="base.group_user"/>
+                        <button name="cancel" states="draft,sent" string="Cancel" groups="base.group_user"/>
+                        <button name="action_cancel" states="manual,progress" string="Cancel" type="object" groups="base.group_user"/>
+                        <button name="invoice_cancel" states="invoice_except" string="Cancel" groups="base.group_user"/>
                         <field name="state" widget="statusbar" statusbar_visible="draft,sent,invoiced,done" statusbar_colors='{"invoice_except":"red","waiting_date":"blue"}'/>
                 </header>
                 <sheet>
@@ -464,11 +462,9 @@
             <field name="arch" type="xml">
                 <form string="Sales Order Lines" version="7.0">
                     <header>
-                        <span groups="base.group_user">
-                            <button name="button_cancel" string="Cancel" type="object" states="confirmed,exception"/>
-                            <button name="%(action_view_sale_order_line_make_invoice)d" string="Create Invoice" type="action" attrs="{'invisible': ['|',('invoiced', '=', 1), ('state', 'not in', ('confirmed', 'draft'))]}" class="oe_highlight"/>
-                            <button name="button_done" string="Done" type="object"  attrs="{'invisible': ['|',('invoiced', '=', 0), ('state', 'not in', ('confirmed', 'exception'))]}" class="oe_highlight"/>
-                        </span>
+                        <button name="button_cancel" string="Cancel" type="object" states="confirmed,exception" groups="base.group_user"/>
+                        <button name="%(action_view_sale_order_line_make_invoice)d" string="Create Invoice" type="action" attrs="{'invisible': ['|',('invoiced', '=', 1), ('state', 'not in', ('confirmed', 'draft'))]}" class="oe_highlight" groups="base.group_user"/>
+                        <button name="button_done" string="Done" type="object"  attrs="{'invisible': ['|',('invoiced', '=', 0), ('state', 'not in', ('confirmed', 'exception'))]}" class="oe_highlight" groups="base.group_user"/>
                         <field name="state" widget="statusbar" statusbar_visible="draft,confirmed,done" statusbar_colors='{"exception":"red","cancel":"red"}'/>
                     </header>
                     <sheet>
diff --git a/addons/stock/stock_view.xml b/addons/stock/stock_view.xml
index 329425148c5..806c723dc73 100644
--- a/addons/stock/stock_view.xml
+++ b/addons/stock/stock_view.xml
@@ -746,16 +746,14 @@
             <field name="arch" type="xml">
                 <form string="Internal Picking List" version="7.0">
                 <header>
-                    <span groups="base.group_user">
-                        <button name="draft_force_assign" states="draft" string="Confirm" type="object" class="oe_highlight"/>
-                        <button name="draft_validate" states="draft" string="Confirm &amp; Transfer" type="object" class="oe_highlight"/>
-                        <!-- <button name="action_assign" states="confirmed" string="Check Availability" type="object"/> -->
-                        <button name="force_assign" states="confirmed" string="Force Availability" type="object" class="oe_highlight"/>
-                        <button name="action_process" states="assigned" string="Confirm &amp; Transfer" groups="stock.group_stock_user" type="object" class="oe_highlight"/>
-                        <button name="%(action_stock_invoice_onshipping)d" string="Create Invoice/Refund"  attrs="{'invisible': ['|','|',('state','&lt;&gt;','done'),('invoice_state','=','invoiced'),('invoice_state','=','none')]}"  type="action" class="oe_highlight"/>
-                        <button name="%(act_stock_return_picking)d" string="Reverse Transfer" states="done" type="action"/>
-                        <button name="button_cancel" states="assigned,confirmed,draft" string="_Cancel"/>
-                    </span>
+                    <button name="draft_force_assign" states="draft" string="Confirm" type="object" class="oe_highlight" groups="base.group_user"/>
+                    <button name="draft_validate" states="draft" string="Confirm &amp; Transfer" type="object" class="oe_highlight" groups="base.group_user"/>
+                    <!-- <button name="action_assign" states="confirmed" string="Check Availability" type="object"/> -->
+                    <button name="force_assign" states="confirmed" string="Force Availability" type="object" class="oe_highlight" groups="base.group_user"/>
+                    <button name="action_process" states="assigned" string="Confirm &amp; Transfer" groups="stock.group_stock_user" type="object" class="oe_highlight"/>
+                    <button name="%(action_stock_invoice_onshipping)d" string="Create Invoice/Refund"  attrs="{'invisible': ['|','|',('state','&lt;&gt;','done'),('invoice_state','=','invoiced'),('invoice_state','=','none')]}"  type="action" class="oe_highlight" groups="base.group_user"/>
+                    <button name="%(act_stock_return_picking)d" string="Reverse Transfer" states="done" type="action" groups="base.group_user"/>
+                    <button name="button_cancel" states="assigned,confirmed,draft" string="_Cancel" groups="base.group_user"/>
                     <field name="state" widget="statusbar" statusbar_visible="draft,assigned,done" statusbar_colors='{"shipping_except":"red","invoice_except":"red","waiting_date":"blue"}'/>
                 </header>
                 <sheet>
@@ -1282,11 +1280,9 @@
             <field name="arch" type="xml">
             <form string="Stock Moves" version="7.0">
                 <header>
-                    <span groups="base.group_user">
-                        <button name="force_assign" states="confirmed" string="Force Availability" type="object"/>
-                        <button name="action_confirm" states="draft" string="Confirm" type="object"/>
-                        <button name="cancel_assign" states="assigned" string="Cancel Availability" type="object"/>
-                    </span>
+                        <button name="force_assign" states="confirmed" string="Force Availability" type="object" groups="base.group_user"/>
+                        <button name="action_confirm" states="draft" string="Confirm" type="object" groups="base.group_user"/>
+                        <button name="cancel_assign" states="assigned" string="Cancel Availability" type="object" groups="base.group_user"/>
                         <field name="state" widget="statusbar" statusbar_visible="draft,assigned,done"/>
                 </header>
                 <group>