Integrated trakt.tv API

We are now back to the previous UI glory that came before the original project shutdown. This commit has a bit of hackish nature to it, but after 3 hours of staring at my screen, this was the only solution I could think of (regarding the Backbone models). Everything looks sweet now :smile: YAY!! RE: Issue #17
Fixed Movie model and now uses 300px wide cover image in sidebar

Sidebar will now use a 300px wide resized cover image instead of the 1080p cover image. Closing the sidebar will not trigger a collection `change` event anymore so cover images won't disapper
Merge pull request #38 from Yify/trakt.tv-integration

Trakt.tv integration