Use notifier for subscribe/unsubscribe to doc
Move gettext() to global where it should be
Bug 1031714 - Add link colour for .warning-review

Added a link colour for .warning-review.
fix bug 1031714 - clarify "in-translation" message
Merge pull request #2539 from groovecoder/translation-in-progress-copy-1031714

fix bug 1031714 - clarify "in-translation" message
Move wiki decorators and exceptions into correct modules.
Fix wiki flag view to not raise NameError.
Optimized db query to only match users with email.
Minor cosmetic changes.
Added MultiQuerySet helper.
Added TransformManager for more complex queryset time annotations.
Use queryset transformation to reduce number of queries on document revision page.
Re-organized wiki/models.py.

- Moved constants into wiki/constants.py
- Moved model managers into wiki/managers.py
- Moved decorators into wiki/decorators.py
- PEP8 cleanups.
Clean pyc files at the start of foreman automatically.
Merge pull request #2514 from darkwing/gettext-global

Move gettext() to global where it should be
Merge pull request #2499 from darkwing/subscribe-notify

Use notifier for subscribe/unsubscribe to doc
Make the wiki page buttons sticky
Add a waffle flag to the render stale document task to enable async processing of subtasks.
Merge pull request #2545 from jezdez/render-stale-task-async

Add a waffle flag to the render stale document task to enable async processing of subtasks.
bug 1034709 - restrict 'all' history view