UC: cleanup

Change-Id: I31a13a24bf958329ad4df792922fbb6d12d44a73
UC: drop JsonUpdateInfo class, more cleanups

Change-Id: If9c54a1cfea2b2ba0ce9de1f55993dc8d71f3bd0
UC: translations: update DE translations

Change-Id: Id62f34e6bacac400f2ccee47e9ffd267ba80c6d2
UC: enable ACRA

Change-Id: I8c75673d2ada6fa8d9330cc15ca47b7feb90415a