Fixes #1202: Now 10000x items is the limit before being converted to next bigger unit

Added a new method to display a number in a long fashion.
Added respective unit tests for them

src/main/java/appeng/client/render/AppEngRenderItem.java

@@ -129,7 +129,7 @@ public class AppEngRenderItem extends RenderItem
 		}
 		else
 		{
-			return NUMBER_CONVERTER.toHumanReadableForm( originalSize );
+			return NUMBER_CONVERTER.toLongHumanReadableForm( originalSize );
 		}
 	}
 }