Merge pull request #86 from jsilvestre/master

Added: nodejs upgrade script
add time sleep after controller restart for update task
Merge branch 'master' of github.com:mycozycloud/cozy-setup

Conflicts:
	fabfile.py
update install node 0.10 task to support raspberry pi
handle raspberry pi case for node install
improve node upgrade task
do not block upgrade script if pkill node doesn't kill anything
Fixed: DS/Home/Proxy couldn't be updated withtout being started and npm installed