Re-enable the support link.

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

mayan/apps/common/apps.py

@@ -1,7 +1,6 @@
 from __future__ import absolute_import, unicode_literals
 
 from datetime import timedelta
-import errno
 import logging
 import os
 import warnings
@@ -135,7 +134,7 @@ class CommonApp(MayanAppConfig):
 
         menu_about.bind_links(
             links=(
-                link_tools, link_setup, link_about,
+                link_tools, link_setup, link_about, link_support,
                 link_documentation, link_forum, link_code, link_license,
                 link_packages_licenses, link_check_version
             )