Add TAG to Main.cpp and Configuration.cpp
Remove several warnings.
Logging behavior changed.

By default the daemon will not log any NOTICE message (e.g.
bundle received, bundle forwarded). A new option -v re-enables
this behavior. Futhermore, log messages will no longer prepared
if there is not output configured for the specific message.
Abort if something fails during configuration

Signed-off-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>