Aha~ loading map from sub folder is coming~

[linsmod]

after folder parsing and listing with the type of ITEM_STRING, which icon should the item using? or may we should have a new type of ITEM_FOLDER?

[linsmod]

aha~ ITEM_FOLDER, ListItemFolderDisplay, and ListItemFolderProperty can be created based on the ITEM_MAP classes, still then, we need a double click event to enter the folder.