fixed signature of Day and Hour in DataProvider
Add institute name to DataProvider
Add entity containers to the EntitiesView
Entity extends Nameable

instead of returning a String the Entity returns an
ObservableValue<String>
Add plug-in org.confetti.tests.core

introduce ListMutator and ObservableList
Progress with tests.core and ObservableList
Progress with ObservableList
Fixed command not defined exception on startup
Add more testcases to ObservableListTest
Change List to ObservableList in DataProvider
Creating new entity refreshes the view

The Subject|Teacher|Room Views listen the modifications of their list
and refreshes the view automatically if a new entity has been added
Rename EntitiesView --> InstituteView
StudentGroupsView.createColumn used in InstituteView
Add icons
Add DayImpl, HourImpl to the XmlDataProvider
Fix the icon in the ChooseFileWizardPage for xml
Fix default perspective on startup & sample icon fix
Change AssignmentsView temporary icon
Add title to Open wizards
Fix the new entities buttons are disabled if no dataprovider is loaded