-Fixes update_transform proc for mobs. Meaning that the proc now actually does something and that mobs with pre-set size multipliers now spawn in the correct size.
-Removes some textbook spaghetti code that was making mice spawn in double (triple?) feigned size multipliers in order to be scoopable. Instead makes miniscule (mob_size var) mobs (such as mice) scoopable by default.
-This also fixes morphs in mouse form becoming tiny.