Fix amulets

[takkaria]

Stats:

• 18 at present
• 2 worthless

Todo:

• Adornment rarity needs to be far increased. (Possibly removed? Flavour issue.)
• Nuke amulets of resistance? ("by the time they're found, you already have rbase").

[anonymous]

oh, I don't know about nuking Amulets of resistance--- You may have plenty of items that resist the base elements, but not necessarily one that resists all of them. And it's nice to not burn an equipment slot if you find an item that gives something nice (like speed) but not the resistances.

[takkaria]

Done in r907.