JERSEY-801: Issue throwing WebApplicationException derived exception which include an entity value

  - Fix (both filter + processor).
  - Reproducer Test (LinkFilter/LinkProcessor doesn't fail when an exception is thrown
    before a resource method is matched (i.e. in request filter).

Change-Id: Idc06f4071d19d88e8d01924eea143a0edc3924ad
Merge "JERSEY-801: Issue throwing WebApplicationException derived exception which include an entity value"