1925: Fixes issue
1903: fixed issue
Merge branch 'staging' into i-1925
1925: Hacks to fix dashboard/assigning tasks issue. Sorry

Since our assigning task is already a hack,
we need another so when the user already has
max number of tasks for a team, we don't have error
when the user tries to resume a task.
Merge branch 'staging' into i-1925
1903: simplified caching handling and caching invalidation
Added migration that creates full_name property
on ThirdPartyAccounts
Added migration that ports all youtube third party accounts username to full_name and the real username to username.
username -> full_name
Added full_name field to ThirdPartyAccount
We need to error when an user try to link more the same account to another user, but not when there are teams involved.
Don't break if there's more than one feed for the same url.
Catch VideoTypeErrors when updating YT descs
Fixed UnicodeDecodeError while testing the description
for videos.
If there's any error while trying to find a video,
we don't blow up
1990: updated demo metrics to include rev
old_description can be None
1999: Fixing Maggie's last concerns

* added search_fields and full_name to TPA admin
interface
* changed username to full_name when removing
a TPA from profile
1738: Some copy tweaks from NPR
1990: updated demo metrics