[clean-up] removed sonar and eclipse warnings

The core of this clean-up is to fix all message classes and surpres the
warning on the static field names as this does not make sense for the
Message class.

Change-Id: Ic76a06c93ad6d673aa4fd4bedb9dfcf85992ef99
Signed-off-by: Alois Zoitl <alois.zoitl@gmx.at>
56 files changed