log with info level
added BaseTest with persistence initialisation and cleaning of db
between tests
split big test method into several small ones, use BaseTest
implemented functional stub for testing StudentInformationViewModel
Started documentation of lendingview
delete flaky test
Merge pull request #614 from davherrmann/issue#586

Issue#586
Finished documentation of lending view.
add javadocs
Finished documentation of return view.
manuell ausgeliehene TeachingMaterials werden automatisch als received
markiert
neue Methode zum refreshen alles Students, wird für manuelle Rückgabe
gebraucht
Refactored and corrected lending and return view.
Merge remote-tracking branch 'origin/develop' into develop

Conflicts:
	src/main/java/de/dhbw/humbuch/view/LendingView.java
	src/main/java/de/dhbw/humbuch/view/ReturnView.java
Added check whether a dunning can be closed
dunning table should update correctly for dunning status update
simplified states of DunningViewModel and DunningView
updated DunningVM tests to new state
Merge pull request #616 from davvitt/issue#609-refreshAfterManualLending

Issue#609 refresh after manual lending
Merge pull request #617 from henningmu/develop

Documented and Refactored Lending and Return view