Add a field to join the current session
phase2 mock
Some binding with the server
many things, delete, join session modal, etc
First drag'n'drop introduction
Note score introduction
add in TODO to update deprecated dependancies
Merge branch 'master' into chat

Conflicts:
	app/partials/sessioninfo.html
	app/scripts/controllers/session.js
	app/scripts/controllers/sessions.js
	app/views/session.html