Fixed bug where auto post loading interferes with post refresh by submitting
Made a nice preview for posting posts
Merge remote-tracking branch 'origin/master' into submit-post-improvement
Improvements for post improvements :grin:

* Get rid of jquery.form dependency
* Submit post through JSON API - this avoids a redirect and rendering
  of the whole channel#show page after the redirect
* Remove preview because it doesn't work with markdown
* Error handling when posting fails
Ne need to render partial when not returning json
Merge pull request #92 from mutle/submit-post-improvement

Submit post improvement