- fixed some leftovers due of recent changes in the theme management

- added a new feature (new modules are required) in the Image Plugin (Menu -> File -> Import -> Import Image) that allow tracing images. This may allow engraving pictures.
- started to add UI's for the Excellon Editor Tools (really early work)

requirements.txt

@@ -44,6 +44,7 @@ pyqtdarktheme
 
 gdal
 rasterio
+svgtrace
 
 # To detect OS dark mode
 darkdetect