Add basic flagging functionality to videos
- Added column of correct to videos, default set to true
- Users can report a video
- This sets video correct attribute to false and gives the video a css class of flagged, which fades it out
- Class changing done via ajax
Add email notification functionality when videos flagged
- Set up ActionMailer class that can email admin when a video is flagged
fix conflicts
Merge branch 'feature/flagging-videos' of https://github.com/raderj89/encore

Conflicts:
	app/assets/stylesheets/concerts.css.scss
	app/controllers/concerts_controller.rb