If an item is marked as not being usable by a party member, this item is usable by this party member
it's apparent in unterwegs in düsterburg on julie - all medicines are usable by her
minimal testcase (change potion to not be usable by one party member, then trying to use it on him) shows this bug: rpgmaker won't let you use this item, easyrpg will let you use
version 0.3 on android
Item Scene: Fix using of medicine and material items. Prevent using w…
…hen it makes no sense. Respect "Hero can use"-list.