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/container/implementations/ContainerWirelessTerm.java

@@ -54,7 +54,7 @@ public class ContainerWirelessTerm extends ContainerMEPortableCell
 		}
 		else
 		{
-			this.setPowerMultiplier( AEConfig.instance.wireless_getDrainRate( this.wirelessTerminalGUIObject.getRange() ) );
+			this.setPowerMultiplier( AEConfig.instance().wireless_getDrainRate( this.wirelessTerminalGUIObject.getRange() ) );
 		}
 	}
 }