1921: Create a VideoFeed when linking with Youtube
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
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.
1921: Remove VideoFeed when deleting YT account
Updated integration repo
Merge branch 'production' into staging
1921: Should add credit now also takes a video
1921: When a new YT video is added, add credit
1921: Use short link in YT descriptions
Merge branch 'staging' into i-1921
1946: Updated integration repo