+ Added: Thread support for Db card loading.
+ Added: PiDbCardList support for removing and clearing card list.
+ Added: PiDbCardList detect already existing duplicates when adding Card DB File to the list.
+ Added: PircViewer proper ProgressBar, StatusBar for app feedbacking information to the user.
+ Added: PircViewer About dialog.
+ Added: PiTableView export table to csv functionality.