Merge remote-tracking branch 'origin/master' into create-comments

* origin/master:
  Avoid fetching subscription status multiple times
  Reuse same collection for paginating comments
  Don't attempt to fetch subject for unsupported types
use scrollIntoView plugin
n/p keyboard shortcuts to navigate comments
Define comments on subject model
Fix recursive loading of paginated comments
Make initial comment selectable
Don't loop selections
Merge remote-tracking branch 'origin/master' into comment-shortcuts

* origin/master:
Merge pull request #45 from bkeepers/comment-shortcuts

Add keyboard shortcuts n/p to navigate comment list