Rhbz1124630 - remove RESTEasy dependency from client

by switching to jersey as JAX-RS implementation, in fedora we could save users 200MB download.

Depend on zanata/zanata-parent#36

Not really depend on this but it's nice to have (especially in preparation for Fedora packaging) zanata/zanata-api#22
I would suggest simply using `println` here.  Most standard libraries I've seen have `println` and/or `printf`, but there's no need for a method which does both.  If you want `printf` with a newline, just tack on `%n` (or `\n` in other languages).  Don't make the interface bigger than it needs to be.  I think it would be better to remove `printfln`.