* Adjusted "Head" ypos posing for consistency.
* Re-named and added Genie "knowledge" related flags.
* Tonks Hangout writing additions and adjustments. (Made it feel more natural to do the next hangout after spending time doing other things)
* Minor Cho writing variant behind Genie knowledge check.
* Converted Snape's hangout events into the new system, and cleaned up relevant code.
* Fixed unreachable cho_quid_E9 event due to an unintentional jump
* Temporarily disabled Snape's hangout 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
