Merge pull request #1 from lbillon/master

Merge from 24h
Move Orga entity to FosUserBundle
Start moving to Symfony 2.5
Update to Symfony 2.3
Can log with a Google Account
Register new users and correct some bugs due to Symfony 2.5
We can use tokens for registering users
List tokens and create tokens
Correct bug on forms
Correct bug on 'PlageHoraire' forms
Register multiple user with one token
Correct user registration
Correct a bug on status state after registration
Make some brand change
Correct flash message for errors while logging
Style improve
Create some error pages
Correct some errors
fixed typo and changed message on public home page
Replaced PHPlanningMaker by Gala PlanningMaker