Adding captcha to the creation form.
Captcha added automatically on every sf2 form if the current user is anonymous.
Should fix the WorkspaceController::OpenAction method.
Merge branch 'master' of github.com:claroline/CoreBundle into captcha

Conflicts:
	Resources/translations/platform.en.yml
	Resources/translations/platform.fr.yml
Small fixes.
Merge pull request #448 from ngodfraind/captcha

Captcha