Also fixes bug 907978 since the flag will be off in R5.
…ch from vote waffle flag. PR Fixes: Fixed Typo (note -> not), added back hide_gallery_header check, fixed indents
…eriod. Fixed extra space.
…unt. Also changed link in header to 2013 videos. It was pointing to a non-existant section of the HP.
Adds a few niceties to the admin interface to make it easier to find information about how many votes there are, who has voted, what they have voted on, etc. There's no tests because admin stuff is in general hard to test and the set of users for this stuff is small and limited to trusted individuals. The only testable thing here is the admin filter, but it's trivial and doesn't handle any edge cases.