Spell hierarchisation and refactoring, plus miscellaneous renaming and minor refactoring

- Adds new generic spell superclasses which aim to group spells such that duplicate code is eliminated, and functions standardised, as much as possible.
- Removes numerous spell classes which are no longer required as a result of this change, and replaces them with instances of the relevant generic spell classes.
- Changes the remaining spell classes to fit with the new system, mostly by having them extend the generic spell classes.
- Completes the transfer of particle spawning to the ParticleBuilder system.

src/main/java/electroblob/wizardry/spell/IceAge.java

@@ -28,7 +28,7 @@ public class IceAge extends Spell {
 	private static final int baseDuration = 1200;
 
 	public IceAge(){
-		super(Tier.MASTER, 70, Element.ICE, "ice_age", SpellType.ATTACK, 250, EnumAction.BOW, false);
+		super("ice_age", Tier.MASTER, Element.ICE, SpellType.ATTACK, 70, 250, EnumAction.BOW, false);
 	}
 
 	@Override