Support for deleting a connection arrow.
Support the context menu on a PackageDiagram, and add the single
"Delete" action.
- Implement multi-undo/redo operations so that multiple operations can
be done atomically.
- When deleting a file group off a package diagram, also delete the
connections.
- notify listeners when an action is trashed (or revived)
- fixed a bug where trashed actions were being listed as package
members.
- AlertDialog shouldn't be the same size as other dialog boxes. They
usually only have a few sentences in them.
- Allow deletion of actions off a package diagram, and remove all
connections as well.