#463 can't use spells/combat after being revived

might have something to do with spamming spells and being interrupted at death

this was due to the IsCasting flag being set to true and never turned off after death. Fixing that however exposed that:

• the queueing of spells is causing alot of the spell bar to glow if you spam it created #468 for that issue
• the icons aren't restoring to the usable state they remain greyed out if they were casted/in-queue before death