- 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/TclCommandCncjob.py

@@ -1,5 +1,4 @@
 from tclCommands.TclCommand import TclCommandSignaled
-from FlatCAMObj import FlatCAMGeometry
 
 import collections
 from copy import deepcopy
@@ -119,9 +118,9 @@ class TclCommandCncjob(TclCommandSignaled):
             else:
                 return "fail"
 
-        if not isinstance(obj, FlatCAMGeometry):
+        if obj.kind != 'geometry':
             if muted is False:
-                self.raise_tcl_error('Expected FlatCAMGeometry, got %s %s.' % (str(name), type(obj)))
+                self.raise_tcl_error('Expected GeometryObject, got %s %s.' % (str(name), type(obj)))
             else:
                 return