play 2.2.0
Merge commit '4d49e1942c7e22806c1d2b4a6b4af95cdf176390' into 2_2
Play 2.2: org.codehaus -> com.fasterxml.
Play 2.2: Migrate samples.
Update Travis conf to Play 2.2.0.
Merge pull request #116 from smola/2_2

Migrate samples to Play 2.2; other migration fixes.