Added a brand new rare item: Mystic Satchel. Extends all characters' max equip slots by 1 each, up to a maximum of 8. :D

- Available as both a rare drop in the general monster loot table, also available as a high-as-hell priced item in the shop. Is NOT given by the 'give 25 of all items' cheat though. >.>

- Do note there MIGHT be some things I overlooked in the process, as it's been some time since I list fully added an item to the list. This is subject to changes down the road I'm sure. :P