RANGER-181: Updated Ranger document with 0.4.0 release details
RANGER-193 : Allow user to be created without group association

Signed-off-by: sneethiraj <sneethir@apache.org>
ARGUS-167 Added new tests for URLBasedAuthDB.isAccessGranted.
Refactored old tests. Web-admin was including test artifacts; excluded them from war.
New declarative test framework.  Committing current state before moving to renaming.