add german translation
add german translation

Signed-off-by: Matthias Kesler <dd3fe5b310b90e6417c53f71f6ae7b2833a6a90b@krombel.de>

riot-spanish/riot-android,vector-im/riot-android,riot-spanish/riot-android,riot-spanish/riot-android,vector-im/vector-android,vector-im/riot-android,vector-im/vector-android,riot-spanish/riot-android,vector-im/vector-android,vector-im/vector-android,vector-im/riot-android,vector-im/riot-android,vector-im/riot-android