Fix Scrolling through subs reduces volume.

https://github.com/isra17/popcorn-app/issues/65
Bumbed version to 0.2.8
Fixed movies not loading when Trakt.tv Data is unavailable

We now "supplement" YTS Movie data with data fetched from Trakt.tv so
long as it is available. Should fix Issues #63 & #110
Merge pull request #187 from Yify/master

Merge `master` into `dev-0.2.8`
Fix re-rendering of Sidebar view when subtitles load

Fixed issue #105 and #119 where subtitles triggered a 'change' event and caused the view to be re-rendered.
Fixed play button not activating when subtitles are already loaded

When the subtitles were already cached, it didn't trigger a 'change:hasSubtitle' event so the button didn't activate.
Merge branch 'dev-0.2.8' of https://github.com/FritzH321/popcorn-app