* Added missing Snape posing during inside Snape's office.
* Added some randomized writing when you try to use Snape's brewing station when he's there.
* Adjusted "Head" ypos posing for consistency.
* Fixed teleport animation issues
* Reimplemented and fixed 'centered' speaker
* Removed menu yalign params (obsolete)
* Reimplemented side image support for speakers
* Fixed selected item usable state for non-owned items in inventory
these menu yaligns had been disabled for a long time (the menu_y variable was never read)
(cherry picked from commit eae844ef0ba31c67b6c2ae5a5a5bd1e33da67b58)
* 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
