added layout to table sub view
added optional per-subview status bar
fixed column handling in table (had problems with filtered out columns before)
replaced createAndDelete flag with a new class hierarhy (Creator)
minor cleanup; less pointer usage
added creator to bottom box; more cleanup
removed some junk
added creator to bottom box layout and re-routed add record event to bottom box
added creator bar UI and cancel button
handling down a reference to Data and the undo stack to the creators
changed CreateCommand to work directly on the model instead of the proxy
moved record creation to GenericCreator class (now taking ID from user instead of using a procedurally generated one)
more compact layout for the bottom box
validate IDs entered by the user
added creator edit lock
check if ID is already in use when creating new IDs
report ID errors also via input field tool tips
added custom creator for cell records
automatically scroll table to the position of a newly created record
added icons and type listing to UniversalId class