Added toGrade instead of null value
Add space between content and page number.
bind LoginViewModel in UIScope
isLoggedIn State dependant on the User set in Properties
Merge pull request #570 from davherrmann/issue#565

Issue#565
BookMgtV/VM umbenannt --> alte Klassen entfernt
Fehler in SchoolYear behoben
Merge pull request #573 from henningmu/issue#558-sms

Added toGrade instead of null value
Q&D-Hacks entfernt
EntiyUpdateEvent-Handling entfernt
vor jedem DAO Zugriff wird der Hibernate persistence context geleert
Extended PDFTest.
Set margins of PDF documents.
Changed y-coordinate of page numbers.
Changed comment
Deleted unused methods of PDFHandler (they got deprecated by issue#444
and are removed completely now)
PDF Class material list's header content is aligned centrally now.
Added padding to
	- PDF Class material list's header
	- PDF Student material list's header
Removed comment
Added a confirm dialog before saving in lending and return view
Merge pull request #576 from B3nRa/pagebreak_issue#575

Pagebreak issue#575
Merge pull request #574 from davvitt/issue#572

Issue#572
Merge pull request #577 from henningmu/issue#542-add_confirm_dialog

Added a confirm dialog before saving in lending and return view