add bindings for further DAOs
added JUnit test for DunningViewModel
prepared api for full-/ delta-import
Style loading indicator
Changed comment
made init method in publicly available
Merge pull request #528 from davherrmann/issue#525

Issue#525
Merge pull request #533 from B3nRa/deltaImport_issue#467

prepared api for full-/ delta-import
Merge pull request #536 from jidel/loading_indicator

Style loading indicator
Implement dialog if the import is a full or delta import
ungenutzte Klassen entfernt.
Entsprechende Fehlermeldungen auskommentiert
Profile-Klasse @Deprecated
Neue Fächer hinzugefügt
Methoden zum einfachen Hinzufügen und Erkennen von Subjects in Student
und TeachingMaterial hinzugefügt
Merge pull request #538 from jidel/issue#534-importWindow

Implement dialog if the import is a full or delta import
Merge pull request #539 from davvitt/issue#537-profilSystem

Issue#537 profil system
Implemented fullImport in StudentInformationViewModel.

All students that do not have any materials borrowed are deleted from db
and the students of the csv are inserted.
If it is a delta import, just the new students are inserted or existing
ones are updated. No student is deleted.
Merge pull request #540 from B3nRa/deltaImport_issue#467

Implemented fullImport in StudentInformationViewModel.
Fixed design issues
changed button label