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/EntityTornado.java

@@ -34,17 +34,13 @@ public class EntityTornado extends EntityMagicConstruct {
 		this.width = 5.0f;
 		this.isImmuneToFire = false;
 	}
-
-	public EntityTornado(World world, double x, double y, double z, EntityLivingBase caster, int lifetime, double velX,
-			double velZ, float damageMultiplier){
-		super(world, x, y, z, caster, lifetime, damageMultiplier);
-		this.height = 8.0f;
-		this.width = 5.0f;
+	
+	public void setHorizontalVelocity(double velX, double velZ){
 		this.velX = velX;
 		this.velZ = velZ;
-		this.isImmuneToFire = false;
 	}
 
+	@Override
 	public void onUpdate(){
 
 		super.onUpdate();