upload current version
model
Merge branch 'Aufgabe2' of https://github.com/55090/de.bht.fpa.mail.s791739 into Aufgabe2
model appLogic files
Merge branch 'Aufgabe3' of https://github.com/55090/de.bht.fpa.mail.s791739 into Aufgabe3
deleted files
added functionality
added filemanager functionality
functional ops with stream
changed parameters of loadTreeItemContents