Added unlink option for facebook/twitter. But only if the user has a password set.
Merge branch 'master' of github.com:PROCERGS/login-cidadao

Conflicts:
	src/PROCERGS/LoginCidadao/CoreBundle/Resources/views/Person/profileEdit.html.twig
	src/PROCERGS/LoginCidadao/CoreBundle/Resources/views/Person/registrationEmail.html.twig
	src/PROCERGS/LoginCidadao/CoreBundle/Resources/views/Person/resettingEmail.html.twig