Bug 1003970 - Tagging comments not shown in user activity
r=glob
Bug 993939: Bugzilla::User::Setting::groups() should use memcached
Bug 1000917 - Backport upstream bug 489028 to bmo/4.2 to allow user last visit searching
Revert previous commit to re-apply with the schema change in a separate commit.

This reverts commit b6b83df873a1509797235738e00f9e6307eca876.
Bug 1000917 - allow user last visit searching (schema only)
Bug 1016273: Bugzilla whine emails missing change to From header made by bug 1010751
disable unusued ember extension
Bug 950491 - When viewing a dependency graph, an "uninitialized value" warning is thrown
- Fixes BMO errors from whine.pl:
  Use of uninitialized value $lang in hash element at Bugzilla/Util.pm line 753.
  Use of uninitialized value $lang in hash element at Bugzilla/Util.pm line 766.