SPNEGO client config automated

Improved LDAP authN logs

Ensure null principal is returned when no attrs are found

Refactor CAS service responses: use builders

Conflicts:
	cas-server-support-openid/src/main/java/org/jasig/cas/support/openid/authentication/principal/OpenIdService.java

Update/Remove deprecated/useless components

Conflicts:
	cas-server-core/src/main/java/org/jasig/cas/services/DefaultServicesManagerImpl.java

Configure JPA transactions based on AOP

Remove deprecated modules