redraw the model after "reset_preferences"

git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@290 bbaffbd6-741e-11dd-a85d-61de82d9cad9

pycam/Gui/Project.py

@@ -1189,6 +1189,8 @@ class ProjectGui:
         """ reset all preferences to their default values """
         for key, value in PREFERENCES_DEFAULTS.items():
             self.settings.set(key, value)
+        # redraw the model due to changed colors, display items ...
+        self.update_view()
 
     def load_preferences(self):
         """ load all settings that are available in the Preferences window from