[FIX] stacking of various "drop-down" elements

The search view's completion list should be in front of the search
view's drawer, which itself should (probably) be on top of the graph
view's "action" dropdown.

The graph view's dropdown itself needs a z-index > 0 to be in front of
the graph itself, otherwise it is inactive and unusable: it's visible
through the graph but not activable.

bzr revid: xmo@openerp.com-20130305093619-s1e5fbl80r7qnk5l

addons/web/static/src/css/base.sass

@@ -1436,7 +1436,7 @@ $sheet-padding: 16px
 
         .oe_searchview_drawer
             position: absolute
-            z-index: 100
+            z-index: 2
             // detach drawer from field slightly
             margin-top: 4px
             top: 100%

addons/web/static/src/js/search.js

@@ -457,7 +457,7 @@ instance.web.SearchView = instance.web.Widget.extend(/** @lends instance.web.Sea
             autoFocus: true,
             minLength: 1,
             delay: 0
-        }).data('autocomplete');
+        }).css('z-index', 3).data('autocomplete');
 
         // MonkeyPatch autocomplete instance
         _.extend(autocomplete, {

addons/web_graph/static/src/css/graph.css

@@ -1,5 +1,5 @@
 .openerp a.dropdown-menu-icon {
-    z-index: 10;
+    z-index: 1;
     position: absolute;
     color: #4c4c4c;
     right: 8px;
@@ -23,7 +23,7 @@
     padding: 8px;
     border: 1px solid #afafb6;
     background: white;
-    z-index: 900;
+    z-index: 1;
     min-width: 160px;
     overflow-x: hidden;
     -moz-border-radius: 3px;