Generalize the Javascript menu rendering into an API for templates that only refresh the menu when there are changes. Closes GitLab issue #511. Thanks to Daniel Carrico @daniel1113 for the report.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/common/apps.py

@@ -17,6 +17,7 @@ from django.utils.translation import ugettext_lazy as _
 
 from mayan.celery import app
 
+from .classes import Template
 from .handlers import (
     handler_pre_initial_setup, handler_pre_upgrade,
     user_locale_profile_session_config, user_locale_profile_create
@@ -89,6 +90,10 @@ class CommonApp(MayanAppConfig):
         if check_for_sqlite():
             warnings.warn(force_text(MESSAGE_SQLITE_WARNING))
 
+        Template(
+            name='main_menu', template_name='appearance/main_menu.html'
+        )
+
         app.conf.CELERYBEAT_SCHEDULE.update(
             {
                 'task_delete_stale_uploads': {