Release of user_saml 0.4 and user_cas 0.1.1

user_saml
* Add csrf protection on setting form
* Add a config param to force the saml login
* Use openssl_random_pseudo_bytes instead of mt_rand (if available)
* Support displayName
* Support multiple values for mapping username, groups, mail and displayName

user_cas
* Added CSRF protection on setting form
* Use openssl_random_pseudo_bytes instead of mt_rand (if available)