Add missing show_all on hbox of toolbar for issue893

tryton/gui/window/view_form/view/form.py

@@ -133,6 +133,7 @@ class ViewForm(ParserView):
                             menu.add(menuitem)
                             menuitem.show()
                         tbutton.set_menu(menu)
+            hbox.show_all()
 
 
     def _sig_clicked(self, widget, action, atype):

tryton/gui/window/view_form/view/list.py

@@ -226,6 +226,7 @@ class ViewList(ParserView):
                             menu.add(menuitem)
                             menuitem.show()
                         tbutton.set_menu(menu)
+            hbox.show_all()
 
         self.display()