Reduces visibility of internal fields/methods

Reduces the visibility of all fields to private and create setters/getters
when necessary. Exceptions are fields with GuiSync as these need to be
public.

Reduces the visibility of internal methods to private/protected/default when possible.

src/main/java/appeng/services/compass/CompassException.java

@@ -24,7 +24,7 @@ public class CompassException extends RuntimeException
 
 	private static final long serialVersionUID = 8825268683203860877L;
 
-	public final Throwable inner;
+	private final Throwable inner;
 
 	public CompassException( final Throwable t )
 	{