Refined the submit algorithm with more owner fixes, plus a final cache update
Handled a case in which a user by moving the generated room would keep the moved user as the owner of the room, resulting in the user to be in two rooms at the same time
[+] Added the Drag'n'Drop mechanism in the wizard page, allowing to move orders between rooms, plus a 'placeholder' space to temporarily keep orders to move others
[minor fix] Item category maps might be filled twice with the same IDs
Added auto indexing by metadata, instead of ID matching
Added checks to propic image uploading
Added an admin page, featuring:
- Manual cache clearing
Added admin controls in nosecount to unconfirm / rename or delete the room
Co-authored-by: Luca Sorace "Stranck" <stranck@users.noreply.github.com>