Small changes

- added modal flip back function
- make flip animation 700 milisecond faster
Close modal

- close modal with the esc key
- close modal after clicking on background
- disable scroll if modal is active
Slide animation, render function

- added animation-fill-mode mixin
- added slide animation
- prefix shake animation
- implemented animation in modal
- render right content when call front or back
- change some ember action in .hbs templates
Merge branch 'develop' into feature/CLUB-564-JHON

Conflicts:
	bluebottle/common/static/js/plugins/bb_modal.js
forgotten changes Mark
Merge pull request #676 from onepercentclub/feature/CLUB-564-JHON

Feature/club 564 jhon