Craftomancy

This update introduces six new spells, one for each color, to balance out the spell roster. This is currently the only time I expect to add new spells, though I won't rule out adding more in the future if I come up with new ideas.

- Added a new set of Level 5 spells: "Flame Trail", "Spirit Sentry", "Blight", "Maelstrom", "Delirium", and "Aura Vision"
- The crafting item for the spell "Petrify" has been changed. Its old crafting item has been given to the new spell "Blight"
- Spells that distinguish between enemies and friendly / neutral enemies now register any entity the player is attacking as an enemy
- Fixed some server-related issues