File3 added

Change-Id: Iea0d97aa7af054083ce8fdcd94d1f2bc1fbaae58
File4 added

Change-Id: Ie02a4090d1de5b8039a50632dc5a13a7210ef30e
Merge branch 'master' of http://max.hartmann@ubu1004.codecentric.local/gerrit/Calculator