Ranger-191:Credential Provider and Policy Cache Store Unit Test Case
coverage
Argus-191: Adding missing License header
RANGER-181: moving Ranger Site (ranger.incubator.apache.org) document into ranger repo
Modified twitter account to Ranger4Hadoop
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.