J-198: Introduce Jackson 1.x compatibility module for Jersey 2.x

 - introduced jersey-media-json-jackson1 module (Jackson1Feature)
 - re-introduced sample using Jackson 1 (examples/json-jackson1)
 - added e2e tests + osgi tests
 - updated documentation

Change-Id: I0df816be71a023a4f3426ed59af733a7cddca05e
Signed-off-by: Michal Gajdos <michal.gajdos@oracle.com>
Merge "J-198: Introduce Jackson 1.x compatibility module for Jersey 2.x"