Add sig_reload_menu and use it when opening tree window on ir.ui.menu model

for issue243

tryton/gui/main.py

@@ -1119,6 +1119,14 @@ class Main(object):
     def sig_shortcuts(self, widget):
         Shortcuts(self.window).run()
 
+    def sig_reload_menu(self):
+        res = False
+        for page in range(len(self.pages)):
+            if self.pages[page].model == 'ir.ui.menu':
+                self.pages[page].sig_reload()
+                res = True
+        return res
+
     def sig_win_menu(self, widget=None, quiet=True, prefs=None):
         for page in range(len(self.pages)):
             if self.pages[page].model == 'ir.ui.menu':

tryton/gui/window/window.py

@@ -21,6 +21,9 @@ class Window(object):
                     search_value=search_value)
             Main.get_main().win_add(win)
         elif view_type == 'tree':
+            if model == 'ir.ui.menu':
+                if Main.get_main().sig_reload_menu():
+                    return
             from tree import Tree
             win = Tree(model, window, res_id, view_ids and view_ids[0] or None,
                     domain, context, name=name)