Init UserFeed from Authenticator

run new user feed from authenticator.js
paste timeago into rizzo [not working yet]
updated feed functions, cleared some code
cleaned up feed styles
updated template
removed new feed indicator from authenticator
fixed wrong target clicking in tabs.js
timeago works from rizzo now
Cleaning & fixing code

forgot to hide the feed flyout :) fixed.

made jscs & jshint passing
converted timeago.coffee to js
moved mixins to the top
Changed it because of failing tests
Updated some authenticator specs

Some functionality has moved to user_feed
Minor fixes to user_feed.js
Update unread messages in responsive nav

it still should be done by authenticator
added some classes for testing purposes
init testing for user feed
Applied latest design look
Whole item is now clickable
hid border from new flyout menu