Resolved JERSEY-1808.

- Added support for new spec changes wrt. empty content and related exception mapping (see JAX_RS_SPEC-390):
  - a NoContentException is produced by default JAXB and Primitive type readers when reading empty content.
  - a NoContentException is translated to BadRequestException on server side
  - a NoContentException is wrapped into a ProcessingException on client side

- Additional changes:
  - Several passing E2E tests unignored. 

Change-Id: I2b0a878fc8221ae5268d3d48c3028669ad2caad4
Signed-off-by: Marek Potociar <marek.potociar@oracle.com>