Cells with null value are empty now
Konstruktoren als deprecated markiert
neue Entity zur Speicherung von Einstellungen
Settings sessionweit bereitgestellt
Removed sysout
added comment
Changed dunning-create buttons to change-dunning-status button
Merge pull request #605 from davvitt/issue#592-settingsTable

Issue#592 settings table
Merge pull request #606 from henningmu/issue#589

fixed width bug by taking a fixed one.
Merge pull request #607 from Junkern/#604

Changed dunning-create buttons to change-dunning-status button
Merge pull request #602 from B3nRa/issue#579

Cells with null value are empty now
Removed System.out.print commands.
Views refreshen bei jedem Aufruf ihre ViewModels
Extended size of database fields
Changed lookup method to static
Integrated importing of book information over isbn
Fixed overwriting of existing comments
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