Refactored AEConfig (#2633)

Added a singleton getter instead the public field.
Reduced all fields to private.
Replaced field access with getters.
Added setters where necessary (Dimension/Biome Registration)
Added config options to disable more features.
Splitted Enum name from the config key.
Changed FacadeConfig and Networkhandler similar to AEConfig.init().

src/main/java/appeng/core/sync/AppEngPacket.java

@@ -71,9 +71,9 @@ public abstract class AppEngPacket implements Packet
 			throw new IllegalArgumentException( "Sorry AE2 made a " + this.p.array().length + " byte packet by accident!" );
 		}
 
-		final FMLProxyPacket pp = new FMLProxyPacket( this.p, NetworkHandler.instance.getChannel() );
+		final FMLProxyPacket pp = new FMLProxyPacket( this.p, NetworkHandler.instance().getChannel() );
 
-		if( AEConfig.instance.isFeatureEnabled( AEFeature.PacketLogging ) )
+		if( AEConfig.instance().isFeatureEnabled( AEFeature.PACKET_LOGGING ) )
 		{
 			AELog.info( this.getClass().getName() + " : " + pp.payload().readableBytes() );
 		}

src/main/java/appeng/core/sync/network/NetworkHandler.java

@@ -37,7 +37,7 @@ import appeng.core.worlddata.WorldData;
 
 public class NetworkHandler
 {
-	public static NetworkHandler instance;
+	private static NetworkHandler instance;
 
 	private final FMLEventChannel ec;
 	private final String myChannelName;
@@ -55,6 +55,16 @@ public class NetworkHandler
 		this.serveHandler = this.createServerSide();
 	}
 
+	public static void init( final String channelName )
+	{
+		instance = new NetworkHandler( channelName );
+	}
+
+	public static NetworkHandler instance()
+	{
+		return instance;
+	}
+
 	private IPacketHandler createClientSide()
 	{
 		try

src/main/java/appeng/core/sync/packets/PacketCompassRequest.java

@@ -70,7 +70,7 @@ public class PacketCompassRequest extends AppEngPacket implements ICompassCallba
 	@Override
 	public void calculatedDirection( final boolean hasResult, final boolean spin, final double radians, final double dist )
 	{
-		NetworkHandler.instance.sendTo( new PacketCompassResponse( this, hasResult, spin, radians ), (EntityPlayerMP) this.talkBackTo );
+		NetworkHandler.instance().sendTo( new PacketCompassResponse( this, hasResult, spin, radians ), (EntityPlayerMP) this.talkBackTo );
 	}
 
 	@Override

src/main/java/appeng/core/sync/packets/PacketLightning.java

@@ -73,7 +73,7 @@ public class PacketLightning extends AppEngPacket
 	{
 		try
 		{
-			if( Platform.isClient() && AEConfig.instance.enableEffects )
+			if( Platform.isClient() && AEConfig.instance().isEnableEffects() )
 			{
 				final LightningFX fx = new LightningFX( ClientHelper.proxy.getWorld(), this.x, this.y, this.z, 0.0f, 0.0f, 0.0f );
 				Minecraft.getMinecraft().effectRenderer.addEffect( fx );