* prevent default event in JS handlers to prevent jumping back to the
  top.
* Use js-routes
* Use sprite for icons
* Reply with 200 instead of 204 when destroying a participation,
  to prevent errors in the browser console.

Lazily load post interactions on show page
hella refactorz

and comment presenter

display proper counts after feedback actions; modified destroy responses to return PostPresenter objects

added api response for likes; cleaned up view logic; specify like collection url from parent model (Post)

migrating like actions over to backbone; some cleanup; bump jquery to
1.7.1

using two less delegates in mobilejs; made some partials for mobile stream elements for sanity's sake

dispatcher

fix retractions, fix likes, backfill likes widget tests, remove typo from jasmine.yml, remove unneeded js files
require confirmation for comments in js, get rid of rails helper

Huge commit I know, but move show and destroy routes into PostsController and PostsController#show into PublicsController

likes controller now has destroy method.  commented out dislikes from views.  unlike links not functional.