schema updated.
Added some more Progress information output.
Established connection between entities department, teaching_unit and discipline
Removed double occurrences of some taskes.
Merge branch 'master' of github.com:Datenbankpraktikum2013/Datenvisualisierung
Solved merge conflict.
Merge branch 'master' of github.com:Datenbankpraktikum2013/Datenvisualisierung