applied changes from http://www.ip-phone-forum.de/showthread.php?t=267477
applied some fixes/modifications mentioned at http://www.ip-phone-forum.de/showthread.php?t=267477&page=3&p=2028714&viewfull=1#post2028714
Merge commit '8774793'
Merge commit '6fccd7e'
Merge branch 'master' of https://github.com/jens-maus/fritzbox_api_php