ARQGRA-197: Support for Page Objects encapsulating location

* @Location and @InitialPage annotations added to support page objects
  encapsulating its location
* Jetty 6 container for functional tests switched with Tomcat 7 - bugs
  in with multiple deployment scenario
* Functional tests for this feature provided
ARQGRA-197: polishing implementation of URL retrieval for @Location
ARQGRA-197: switching test-impl-base back to test-scoped