saml backchannel logout
merge
Merge pull request #747 from patriot1burke/master

saml backchannel logout
undertow slash redirect problem
Merge pull request #749 from patriot1burke/master

undertow slash redirect problem
KEYCLOAK-742 Added always-refresh-token option to adapters
KEYCLOAK-743 Stateless session mgmt. Drop statistics for adapters.
KEYCLOAK-741 Failure to refresh token should invalidate http session
Reduce logging