German translation of the new error responses

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Secured code, enhanced refresh button look

Signed-off-by: pralonga <aurelien.pralong@gmail.com>
Updated translations

Signed-off-by: pralonga <aurelien.pralong@gmail.com>
Next version preparation

Signed-off-by: pralonga <aurelien.pralong@gmail.com>
Fixed timezone problems, when synchronizing with server

Signed-off-by: pralonga <aurelien.pralong@gmail.com>