Add User dropdown menu to Header
Merge pull request #1937 from verg/user_dropdown

Add User Avatar Dropdown
Use stable version of onebox gem rather than github
Users who have made no more than one post can delete their own accounts from their user preferences page.
FIX: Incorrect post number following a link. Updated ember-cloaking.
Improve wording in admin quick start guide a bit. Thanks @riking.
Use ember computed property shortcuts
FIX: stupid mistake that broke flagging of posts
BUGFIX: regression, not handling nil count for recent report
Schedule a `blur` on links when the route changes. Also, convert DOM
cleanup tasks to only schedule once per render.
In email digests, try to get longer excerpts if we don't have enough
characters from the first paragraph.
add /public/backups directory to .gitignore
this should really be the AdminController
remove unnecessary ()
binding to a POJO is useless
fix code styling
add case insensitive test on ajax request type
remove gradient & box-shadow on buttons
ligther danger dark highlight
added some comments