Fix Bug 904649: Made vote CTA in sidebar only display during voting period.

Fixed extra space.
Fix Bug 904639: Update gallery page for end of voting. Decoupled search from vote waffle flag.

PR Fixes: Fixed Typo (note -> not), added back hide_gallery_header check, fixed indents
Remove unnecessary tests and fix existing ones.
Fix Bug 904632: Change HP copy for voting end.

Added additional copy for winners announce state.

Updated text

Added last tweak from gregory.

Fixed indents so mkelly does not murder me.

PR Fix: Create macro for HP CTAs
Fix bug 906853: Remove popularity option when voting-end flag is active.

Also fixes bug 907978 since the flag will be off in R5.
Fix bug 909776: Ensure VideoSearchForm doesn't throw with invalid sort.
Add filter to vote admin that uses a select box for display.