Webservices: Updated tests to reflect changes in JBDS 8.0.0 Beta2

- updated constants
- updated java doc
- SampleRESTWebServiceTest is deprecated (dialog was removed)
see http://tools.jboss.org/documentation/whatsnew/jbosstools/4.2.0.Beta2.html#webservices
Webservices: Fixed PathParamAnnotationSupportTest and created new test case

Fixed typo in projectPath3 constant and added new test case verifying
JBIDE-17663 (JAX-RS Explorer doesn't reflect binding parameter to field)
Webservices: Improved tests stability

- verbose assertion's text
- handled missing of JAX-RS WS Explorer
- waiting until JAX-RS Support jobs start no longer thrown time out exception
- RESTFullExplorer: JAX-RS Explorer is expanded before getting its items
- WsTesterTest: removed default request type assertion,
	which was unstable because this assertion must be done before any other
	test change the value of request type
Webservices: Created README file that describes tests setup