[]FIX] disable (broken) inline edition in grouped editable lists

Because the Add/Create button is global, it's not really possible to
know *where* to create the new record, and the current design can't
really deal with a record being edited outside of all groups.

An option might be to create a dedicated empty group for that, but the
cost/benefit is high and the UI would probably be odd.

lp bug: https://launchpad.net/bugs/1098205 fixed

bzr revid: xmo@openerp.com-20130306102136-2ms7llbt4swka92k

addons/web/static/src/js/view_list_editable.js

@@ -96,7 +96,8 @@ openerp.web.list_editable = function (instance) {
             });
         },
         editable: function () {
-            return !this.options.disable_editable_mode 
+            return !this.grouped
+                && !this.options.disable_editable_mode
                 && (this.fields_view.arch.attrs.editable
                 || this._context_editable
                 || this.options.editable);