[bug 1051826] Update django-tidings.

60da817 Remove rate limit on claim_watches task.
[bug 1055725] Fix profile_avatar handling of unicode in emails.
[bug 1053837] Update django to 1.6.6
[bug 1052455] Add community discussion thread links to hub.
[bug 1037900] Fix showfor link in wiki editor.
Skip KPI cron jobs on stage.
And skip another cron job on stage.
[bug 1037900] Fix for cc2c70a
Add gallery API with size filtering.
Add get_media.py script.
API: Include the url for the image file.