[GREENFOOT-590] startupProject should not show in 'Open recent...' list
In the Scenario menu, in the 'Open recent' submenu, the startupProject is included in the list if it was recently opened. It shouldn't be listed.
(The startupProject is used when Greenfoot is opened for the first time, or when the last project attempted to be opened on startup cannot be found anymore.)
- Issue type: Bug
- Priority: Low
- Fix versions: 3.1.0