Bug 3010 - Fix Soundcloud media not loading
No Bug - Fix lint error that only Travis CI can see
[#2373] Support for TrackEvent and PopcornWrapper to use Popcorn trackevent update method.

Provided update method for Text Plugin
Fix tests
Changed approach to use previous storage of trackevent ids so less calls to popcorn instance were needed
Lint errors
Forgot width updating
Didn't take into account for zindex updating. Reduced some code for text shadow updating
Remove changes made around what was needed for an update function for text