added comments to all editpart in the package org.framed.orm.ui.editPart
except ORMRelationLabelEditPart, deleted unnecessary code and added
final to the method parameter and some local variables
added code for the correct functionality of the
ORMCompartmentGroupingCreateCommand
added comments to all editparts in package
org.framed.orm.ui.editPart.connectionkinds and added final to method
parameter