Multicast Socket in eigene Klasse gekapselt.

OPEN - task 3: Backupserver Anbindung 
http://github.com/tkessels/publicMain/issues/issue/3
Merge branch 'tcp' of https://github.com/tkessels/publicMain.git into tcp
OPEN - task 3: Backupserver Anbindung 
http://github.com/tkessels/publicMain/issues/issue/3

works almost