entitlements scheme proposal

add EntitlementsTest
record entitlement context for REST web requests, and log more info of web requests
add AcmeEntitlementManagerTest
add isEntitled check to ApplicationResource and EntityResource
add unauthorized to WebResourceUtils
add FROM_ENTITY function to EntityTransformer
add EntitlementPredicates
@aledsage is correct, I have seen this issue appear on other Apache projects. This simplest route is to remove the copyright claims from this PR.