Update German translation.

Wording taken from phone app and adapted for messages.

Change-Id: Ib8b9826a36ba45feaa6d3698ee0e5210044367ea
Merge "Update German translation." into cm-10.2
add copy number menu

Change-Id: I2dfd9f76ce586e88a9cd7b2c3c4d39ca29e0886d