use java 7 in helper

Change-Id: If59579420d13322a69ecd5e1e5d85546dddb8ce1
Update translations

Change-Id: I5279b4eb735ea10e5802448cee1df450e95adcfb
Update translations

Change-Id: Ie863520bbe3c96c388a3a8630bb98f507ac2b332
Fix travis

Change-Id: I538eafba578491b795c333448d4407738a68ff60
Merge "use java 7 in helper"
Merge commit '2373582ba7f2936b8f288b532fca91dcefbb99d6'
Merge commit '3c9280d25ba1381f6e655775144244342daa7159'
Merge commit 'd2a27478c46139919830c59f1154cd3124b69524'