[FIX] start() synchronization in group search widget

Group did not propagate the result of start()ing its subwidgets to its caller (an other group or the searchview itself) => if it contained an async-starting widget (e.g. an m2o), the search view would not be able to wait for the async widget, and would consider itself 'intialized' before truly being so, leading to incorrect results in case of auto_search

bzr revid: xmo@openerp.com-20110803110615-3ps3he9hza05h7q8

addons/base/static/src/js/search.js

@@ -140,7 +140,7 @@ openerp.base.SearchView = openerp.base.Widget.extend({
         var widget_starts = _(lines).chain().flatten().map(function (widget) {
             return widget.start();
         }).value();
-        
+
         $.when.apply(null, widget_starts).then(function () {
             self.ready.resolve();
         });
@@ -475,11 +475,11 @@ openerp.base.search.Group = openerp.base.search.Widget.extend({
     },
     start: function () {
         this._super();
-        _(this.lines)
-            .chain()
-            .flatten()
-            .each(function (widget) { widget.start(); });
         openerp.base.search.add_expand_listener(this.$element);
+        var widget_starts = _(this.lines).chain().flatten()
+                .map(function (widget) { return widget.start(); })
+            .value();
+        return $.when.apply(null, widget_starts);
     }
 });
 
@@ -779,7 +779,7 @@ openerp.base.search.OneToManyField = openerp.base.search.CharField.extend({
 });
 openerp.base.search.ManyToOneField = openerp.base.search.CharField.extend({
     // TODO: @widget
-    // TODO: .relation, .selection, .context, .domain
+    // TODO: .selection, .context, .domain
     init: function (view_section, field, view) {
         this._super(view_section, field, view);
         var self = this;