Merge pull request #1042 from lmorchard/831444-remove-forums

bug 831444: Remove forums and kbforums apps
[Bug 831444] Remove Twitter app.
[Bug 831444] Remove questions app.
Merge pull request #1043 from berkerpeksag/bug-831444-twitter

[Bug 831444] Remove Twitter app.
[Bug 831444] Remove upload app.
Merge pull request #1045 from berkerpeksag/bug-831444-upload

[Bug 831444] Remove upload app.
bug 859875 - watch page for email notification

add django-tidings

update/copy/refactor wiki events code from SUMO

remove notifications from apps in use

restore and move watch view tests
Fix bug 676379: Provide a 'quick-review' view for one-click technical/editorial approval.

As a side effect, fix a bug in reverting to a specific revision; the
review tags of the reverted-to revision weren't being set back properly.
Merge pull request #1034 from ubernostrum/mark-as-reviewed-676379

Fix bug 676379: Provide a one-click 'quick-review' view
Merge pull request #1046 from berkerpeksag/bug-831444-questions

[Bug 831444] Remove questions app.
Merge pull request #1036 from groovecoder/page-watch-email-859875

bug 859875 - watch page for email notification
bug 839559: Enable section editing

* Unhide in CSS

* Render macros on section edit response

* Ensure https:// links on redirect in Vagrant