New features:
- Fix GitHub Issue #77: Ctrl+S on new map should directly open 'save as' dialog
- Fix GitHub Issue #85: Export SVG
- Fix GitHub Issue #100: Use a better initial directory when saving a new file
- Add Dutch translations
Bug fixes:
- Fix GitHub Issue #87: Group move doesn't work with the move handle
- Fix GitHub Issue #97: Redo does stuff when redo shouldn't be possible
- Fix GitHub Issue #96: Saving sometimes doesn't work after loading an existing file
Other: