#24 Changes on specification get lost

[Bernd Willer]

Specification changes get lost
Test case:
- Start a new specification
- Add elements
- Close editor/specification
- "Save changes before closing" -> yes
- "Save-as" dialogue box -> cancel

Expected behaviour:
After cancelling the "save-as" dialogue box, the focus should be passed to the editor with the specification.

Actual behaviour:
When intended to close the editor and the appearing 'save as'-dialogue is cancelled, the editor is closed and changes on the specification get lost.