- replaced the testing if instance of FlatCAMObj with testing the obj.kind attribute

- removed the import of the whole FlatCAMApp file only for the usage of GracefulException
- remove the import of FlatCAMApp and used alternate ways
- optimized the imports in some files
- moved the Bookmarksmanager and ToolDB classes into their own files
- solved some bugs that were not so visible in the Editors and HPGL parser
- split the FlatCAMObj file into multiple files located in the flatcamObjects folder and renamed the contained classes with names more suggestive
- updated the Google Translation for the German language

tclCommands/TclCommandGeoCutout.py

@@ -1,5 +1,4 @@
 from tclCommands.TclCommand import TclCommandSignaled
-from FlatCAMObj import FlatCAMGerber, FlatCAMGeometry
 
 import logging
 import collections
@@ -209,7 +208,7 @@ class TclCommandGeoCutout(TclCommandSignaled):
         except ValueError:
             gaps_u = gaps
 
-        if isinstance(cutout_obj, FlatCAMGeometry):
+        if cutout_obj.kind == 'geometry':
             # rename the obj name so it can be identified as cutout
             # cutout_obj.options["name"] += "_cutout"
 
@@ -306,7 +305,7 @@ class TclCommandGeoCutout(TclCommandSignaled):
             # cutout_obj.plot()
             # self.app.inform.emit("[success] Any-form Cutout operation finished.")
             # self.app.plots_updated.emit()
-        elif isinstance(cutout_obj, FlatCAMGerber):
+        elif cutout_obj.kind == 'gerber':
 
             def geo_init(geo_obj, app_obj):
                 try: