Add a new world property stores_restock_by_level that makes restocks happen at...

Add a new world property stores_restock_by_level that makes restocks happen at player level 5 and every multiple of 10.  This is applied to only AoA.

Fix some shops referencing type "robe" that doesn't actually exist

Set most AoA shops nb_fill value to 4 from 10

Set most AoA shops to use player_material_level

Set AoA inscription shops to guarantee an ego

Create a new set of equipment shops specific to Gates of Morning.  Each has nb_fill of 2, 300% sell price increase, and guarantees 2 greater egos.  Material tier is controlled by the zone instead of using the new player_material_level.