removed old webapp artifacts
refactored role lookup for paths to provider class
added test config resources
initial abstraction of some role-based PEP functions
renamed BasicRolesPEP to BasicRolesJavaPEP - to clarify that permissions are determined in custom code.
added beginnings of XACML PEP and PDP
removed inefficient string concatenation in logging statements
implemented XACML request build
configured XACML PEP/PDP
Review updates for https://www.pivotaltracker.com/story/show/56160494
Merge branch 'initial-review' of git://github.com/awoods/fcrepo-authz into awoods-initial-review

Conflicts:
	fcrepo-auth-roles-basic/src/main/java/org/fcrepo/auth/roles/basic/BasicRolesPEP.java
	fcrepo-auth-roles-common/src/main/java/org/fcrepo/auth/roles/common/AccessRolesProvider.java
fixes access roles API endpoint, changing fcr:accessroles to fcr:accessRoles
Merge pull request #2 from gregjan/master

Includes changes from awoods and refactoring of roles PEP support