Added create notification type
Removed some "over styling" from revisions dropdown.
Fixed #65 where notifications do not clear when switching user on a single session.
Fixed #66 - As suggested by juristr - user should be able to disable animations. Currently affects fade animation of the Gist section and animation of the list (on the left) while searching.
Merge branch 'master' into maayan

Conflicts:
	app/js/controllers/headerController.js
	server/app.js
preparations for gisto-chrome plugin compatibility - Server is complete