Cosmetic updates to winners page

* Wrapped a box around the winners gallery
* Tightened up typography in the sidebar
Merge remote-tracking branch 'craigcook/bug-847623-awards-page'
Additional partners updates

* Enlarged TechSmith logo, they're now a major partner
* Added 'major partners' section heading
* Shrank section headings and made them gray to distinguish them better from logos
* Removed vimeo from footer
* Added TechSmith to footer