add parent_id and approved columns to comments
admin comments index view
sessions controller destroy/logout route, add flash message to create fail
minor login ui tweeks
minor ui changes
table row coloring for comments approved/not approved
approve or unapprove comment
redirect admin to dashboard if already signed in and hits /admin/login
install ancestry gem, begin nested comments feature on comments
handle comments form placement change from clicking reply
handle comment ajax rendering
comments_controller_spec additions for ajax requests
minor xhr format.html refactor to uploads_controller
minor naming change to approve-comment.coffee
Merge pull request #14 from leeduan/feature/comments

Feature/comments