Merge branch 'dev/bugfix' into 'develop'
Dev/bugfix Following Issue's have been fixed with this patch: - issue #34 JComboCheckBox NullPointerException on dropdown (OS: Windows) - issue #30 Predefined Attributes for outputprocessors - issue #26 Quicksave feature ist komisch - issue #23 Undo/Redo Funktionalität unzuverlässig - issue #16 Topography creator: esc sollte einen Zeichenvorgang abbrechen - issue #9 Postvis: Photo und Video Export See merge request !21

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