Resolved JERSEY-1721.

- Added new UriTemplate resolve(URI, URI), normalize(URI) and relativize(URI, URI) methods
- Implemented Link.Builder.build() with resolve against base URI support.
- Implemented Link.Builder.relativize() support.
- Implemented UriInfo resolve & relativize methods.
- Implemented support for resolving links returned from the Response on the client side.
- Added tests.
- PS2: unified and fixed Link-related E2E tests.

Change-Id: Id574e2ba6e87df2c4f22df9946720efde4cecbd6
Signed-off-by: Marek Potociar <marek.potociar@oracle.com>