- fixed some missing cleanup when leaving wiiflow. in particular the pointer textures and closing the language ini.
- new way to handle the custom blank covers by Abz. blank covers now must go in wiiflow/boxcovers/blank_covers folder and must be named after their platform name via platform ini. they can also now be png or jpg.
is found, it will just replace the filename extension with .jpg
and try it again, the jpg file width and height need to be
divisable with 4, otherwise wiiflow will just ignore the cover