Dev/bugfix
Following Issue's have been fixed with this patch:
- issue #34 (closed) JComboCheckBox NullPointerException on dropdown (OS: Windows)
- issue #30 (closed) Predefined Attributes for outputprocessors
- issue #26 (closed) Quicksave feature ist komisch
- issue #23 (closed) Undo/Redo Funktionalität unzuverlässig
- issue #16 (closed) Topography creator: esc sollte einen Zeichenvorgang abbrechen
- issue #9 (closed) Postvis: Photo und Video Export