Major Refactoring of Bootstrap Code (#75)

- Refactored boostrap code:
  * Completely reworked item/block/tile registration.
  * Fixed server side startup.
  * Fixed server side startup.
  * More documentation.
  * More heavy cleanup
  * More cleanups.
  * Major refactoring of state mapping and fixes a lot of other issue related to item rendering.
  * Fixes sky chest item models (no item TESR).
  * Only use CachingRotatingBakedModel for tile entities automatically.
  Fix default rotation of quartz pillar for item model.
  * Used method reference instead of lambda for ItemMeshDefinition for multiparts.
  * Removed unnecessary IHasSpecialItemModel
  * Removed unused IconReg class.
  * Updated resource pack version.

src/main/java/appeng/core/AppEng.java

@@ -196,7 +196,6 @@ public final class AppEng
 
 		this.registration.initialize( event, this.recipeDirectory, this.customRecipeConfig );
 		IntegrationRegistry.INSTANCE.init();
-		CommonHelper.proxy.init();
 
 		AELog.info( "Initialization ( ended after " + start.elapsed( TimeUnit.MILLISECONDS ) + "ms )" );
 	}