Open Last Database

The option to open the last database when Rekall is started up (and is not given a database on the command line) is disabled in RekallRT. This is done since it would otherwise be possible to get in a situation where the last database no longer existed; RekallRT would try to open this, fail, and immediately exit. If RekallRT is started without specifying a database on the command line it will show the file-open dialog (and exit if no database file is selected).