No issue
- Changes Modals to use CSS-based animations
- All modals have an animation, so the option is removed from the handlebars helper
- Removes `animation` from the handlebars helper, as all had one anyway
- Removed the `centered` style - All modals should be left-aligned
- Buttons now default to being on the left
- Cleans up some styles (modal body top spacing) which #4632 helped clean up
Closes#1990, Ref #3810
- Add `js-` prefix to jQuery calls throughout code and templates
- move MarkdownComponent classNames to template
- Fix back button on posts content preview
- Remove dead code for preview tabbing jQuery
Closes#2849
-wire up delete post action in ember admin
-refactor ember modal dialog
-override RESTAdapter.deleteRecord to workaround Ember expecting
an empty response body on DELETEs