JBIDE-17296 - Missing warning decorator on the "JAX-RS Web Services" node when no application is defined

"JAX-RS Web Services" node in project explorer shows a "warning" decorator (by default)
if no application was defined, unless no JAX-RS element exists in the project.
JBIDE-16981 - Validation of @Path parameters binding ignores @PathParam fields
JBIDE-17276 - JAX-RS Endpoints should not display an error marker when error is on JAX-RS Application

Error marker is only shown on the "JAX-RS Web Services" node in the Project Explorer, not on all Endpoint child nodes.