[FIX] point_of_sale: prevent from spinner to appear when we have a rpc timeout, and try to flush saved orders after loading

bzr revid: fva@openerp.com-20130327125541-pbqkn764h6fngf33

addons/point_of_sale/static/src/js/models.js

@@ -295,7 +295,8 @@ function openerp_pos_models(instance, module){ //module is instance.point_of_sal
                 return;
             }
             //try to push an order to the server
-            (new instance.web.Model('pos.order')).get_func('create_from_ui')([order])
+            // shadow : true is to prevent a spinner to appear in case of timeout
+            (new instance.web.Model('pos.order')).call('create_from_ui',[[order]],undefined,{ shadow:true })
                 .fail(function(unused, event){
                     //don't show error popup if it fails 
                     event.preventDefault();

addons/point_of_sale/static/src/js/widgets.js

@@ -879,6 +879,8 @@ function openerp_pos_widgets(instance, module){ //module is instance.point_of_sa
                 instance.web.unblockUI();
                 self.$('.loader').animate({opacity:0},1500,'swing',function(){self.$('.loader').hide();});
 
+                self.pos.flush();
+
             }).fail(function(){   // error when loading models data from the backend
                 instance.web.unblockUI();
                 return new instance.web.Model("ir.model.data").get_func("search_read")([['name', '=', 'action_pos_session_opening']], ['res_id'])