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/entity/construct/EntityIceSpike.java

@@ -16,12 +16,7 @@ public class EntityIceSpike extends EntityMagicConstruct {
 		this.setSize(0.5f, 1.0f);
 	}
 
-	public EntityIceSpike(World world, double x, double y, double z, EntityLivingBase caster, int lifetime,
-			float damageMultiplier){
-		super(world, x, y, z, caster, lifetime, damageMultiplier);
-		this.setSize(0.5f, 1.0f);
-	}
-
+	@Override
 	public void onUpdate(){
 
 		if(lifetime - this.ticksExisted < 15){