- fixed an issue due of recent changes that made the application think that is run always for the first time; fixed not applying the selected language translation

- some more code is refactored in the Preferences
- the axis will now be drawn on the canvas as they were left in the previous run (just like the HUD and the Workspace)
- for processors with less than 4 cores now the default number of workers is 1 (changed from 2)
- some graphical settings go now directly to the defaults dictionary and will not pass through the `options` app dictionary

app_Main.py

@@ -1358,7 +1358,7 @@ class App(QtCore.QObject):
         # ##################################### FIRST RUN SECTION ###################################################
         # ################################ It's done only once after install   #####################################
         # ###########################################################################################################
-        if self.options["first_run"] is True:
+        if self.defaults["first_run"] is True:
             # ONLY AT FIRST STARTUP INIT THE GUI LAYOUT TO 'minimal'
             self.log.debug("-> First Run: Setting up the first Layout")
             initial_lay = 'minimal'
@@ -1369,7 +1369,7 @@ class App(QtCore.QObject):
             self.ui.general_pref_form.general_gui_group.layout_combo.setCurrentIndex(idx)
 
             # after the first run, this object should be False
-            self.options["first_run"] = False
+            self.defaults["first_run"] = False
             self.log.debug("-> First Run: Updating the Defaults file with Factory Defaults")
             self.preferencesUiManager.save_defaults(silent=True)