* Converted Astoria's spell training into the new system, and cleaned up the code.
* Improved Astoria's menu layout
* Replaced -hidden- menu feature names with actual the actual feature names
* Refactored Astoria's file structure and naming convention
* Temporarily disabled spell training stats
* Added checkpoints to forbid the editor from rolling back to menu context
* Added forced checkpoint for when the editor is being opened to avoid rolling back to before it was opened (by opening a console for example)
* Alleviated the issue for when the game tries to recover from the place it cannot stop rolling back, but version var is unavailable because of it being not initialized in that moment
