Fix Post-rendering bug

Ember.Handlebars.normalizePath was being called with an object as
argument which caused it to error out.
also wrapped the return in a SafeString, so the html will not get
escaped again.
fixing the admin icon in the compose window
Merge pull request #1825 from awesomerobot/master

fixing the admin icon in the compose window
FEATURE: better top pages
BUGFIX: properly hide categories/top lists view when loading another tab
BUGFIX: cannot sort topic
Disallow auth callbacks in robots.txt
Delegate :username rather than using a class method.

This is just a little cleaner?
Page title includes page number for web crawlers
BUGFIX: groups page wasn't working
BUGFIX: could not save user's preferences when categories where watched/tracked/muted
FIX: Accept HTTPS or HTTP urls on redirect
FIX: Allow click tracking to work with different origins
FIX: Incorrect string match
FIX: When embedded, don't show button at the top unless there are more than 10 posts.
BUGFIX: emoji's url were relatives (was breaking the wordpress plugin)
BUGFIX: inline spoiler for text, block spoiler for images
BUGFIX: do not pull images we already host locally
message bus update
* supports new /global/ cross sites bus
* supports last_message
FEATURE: Automatically force a full refresh between pages if assets change