Fixed warning window of settings tab
Merge pull request #689 from jidel/issue#686

Fixed warning window of settings tab
Merge pull request #691 from B3nRa/#649

#649: add JUnit tests for StudentInformationViewModel
bind Properties as lazy singleton
change modifiers of States from private to public final
added helper methods for Entity instantiation
added test methods for state testing
Merge pull request #693 from B3nRa/#652

Deleted PDFOrderList.
added cascading options
fixed Logger initialisation
use a category when creating TeachingMaterial
added further tests
simplified test
added helper methods for creating a user
use new helper methods in TestUtils.java
fixed bug concerning login state with Properties singleton
added helper method for creating a SchoolYear in the future
added further tests
added further tests
LOG Ausgaben hinzugefügt. Dienen zur Analyse der Performance.

Javadoc-Autor-Kommentar hinzugefügt.