JBIDE-16431 : sanitize URI when opening web tester view

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-16328 - Buglets in JaxrsResourceMethodValidatorDelegate.validatePublicModifierOnJavaMethod()

Fixed the incomplete validation message ('{0}' was not substitued).
Added an exception if the parent type is an interface.
JBIDE-16313 - Replace AST Visitors with simpler code

Removed all implementations of ASTVisitor in the org.jboss.tools.ws.jaxrs.core.jdt package
Fixed a few JUnit tests