Change displayed label
Refactor ComboViewer direct edit
Rename directEditManager
"Add licence"
Enable change destination class
Refactor obtaining label for Class object in direct edit
Move showing feedback to superclass
Change model field visibility
Enable change generator Class
Do not override redo action

* Also add licence if it is not present in source code
Show feedback after rename generator
Enable rename sender
Enable rename Reporter
Enable change property
Rename methods setClass to setClazz
Fix freeze when saving in design editor