Update to parse statistics from new ZDoom save game format
Fix for error when deleting a source port
Duplicating IWads in two places is no longer required. IWads are now used from the GameFiles directory.
IWads will now only show in the IWads tab.
Better date/time parsing from text files.
Fixed bug that would cause files associated with a deleted game file to be associated with a new one when added (Screenshots, save games etc).