Added Save Data Utility UI (stub)

Added a UI for Save Data List, which is a stub with simple windows and static text. 'cause most of those calls related to save data list aren't implemented yet, i can not decide the struct of data to exchange between emulation core and the UI. That's a stub (just for looking), no real effect.
It would shows warnings if you play with that in Config->Save Data Utility. There are 3 dialogs. Well i find myself stupid in making all submenu items binded to the sort function.
Also i modified auto-pause ui to let it looks a little better.