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/FacadeConfig.java

@@ -33,7 +33,8 @@ import net.minecraftforge.common.config.Configuration;
 public class FacadeConfig extends Configuration
 {
 
-	public static FacadeConfig instance;
+	private static FacadeConfig instance;
+
 	private final Pattern replacementPattern;
 
 	public FacadeConfig( final File facadeFile )
@@ -42,6 +43,16 @@ public class FacadeConfig extends Configuration
 		this.replacementPattern = Pattern.compile( "[^a-zA-Z0-9]" );
 	}
 
+	public static void init( final File configFile )
+	{
+		instance = new FacadeConfig( configFile );
+	}
+
+	public static FacadeConfig instance()
+	{
+		return instance;
+	}
+
 	public boolean checkEnabled( final Block id, final int metadata, final boolean automatic )
 	{
 		if( id == null )