CHANGE
- Disabling of the "Debugging" menu.
  - SHOW_DEBUGGING_MENU can be used in order to toggle this menu between "shown" and "hidden".
- Disabling of the "Configuration" -> "Extruder" menu.
  - SHOW_EXTRUDER_MENU can be used in order to toggle this menu between "shown" and "hidden".
- Upper-/lowercase review of menu texts.
- Moving to V 0.91.33