First draft of security page
Merge branch 'production' of github.com:pculture/unisubs into production
Second draft of security page
i-1912: increase gauge_videos task interval to 60 seconds
1916: Resync subs to remove credit
updated domain for GA tracking
Merge branch 'i-1912' into staging
Merge branch 'production' into staging
1916: Check for both unisubs and amara domains
1916: Don't die when a language has no versions
1916: Add better logging (timestamp and flush)
1916: Catch more errors

* Private videos (VideoError)
* Unicode in descriptions
1919: Update Facebook link in footer
1916: Better exception handling
A few domain-related tweaks
1916: Implement cache file to keep track of videos
1916: Allow runnning for a single team only
1916: Update docstring
1916: If video doesnt have desc, it's not an error
1916: Wrap handle in try/finally, add sleep

Add 3s sleep after processing each video.  The try/finally is there so that
even when you Ctrl-C out of the process you still get the yt-cache file
populated with data.