Support for RESTMapping retrieval from the network

the WebConnector can retrieve RESTMapping information on its own using
the new ServiceInfoAgent

there are 3 possibilities:
1) provide the connector with a folder path containing xml files
2) a service informs about its own mapping by providing a getRESTMapping
method
3) like 2) but a service can provide information about other services
(using local XML files)

Also the non standard compliant HTTP Basic Auth Issue (LAS-14) was fixed