Added internal databases to hold config and internal category information
Added internal user management service to be used for role management
Use correct uri for internal database
Fixed permission evaluation for ldap accounts
If user is set as internal admin, permit read action
Send ServiceUnavailable response if no UniRepService is configured
Added tests using a test database

* Check configuration element access
* Check internal user database access
Added some tests to EnabledCategoryServiceTest
Merge branch 'experimental'