Add documentation on custom roles and CustomRoleProvider
Add some documentation under Access Control Lists on custom roles and the CustomRoleProvider
These are briefly documented in etc/custom.properties but should also be in the admin guide:
# Optional custom roles which can used in ACLs and granted to users or groups (comma-separated list of role names)
#org.opencastproject.security.custom.roles=ROLE_ONE, ROLE_TWO, ROLE_THREE
# Optional custom roles pattern (regular expression). Roles matching this pattern can be added to ACLs.