Save config file after adding 'recent file'
Save config file after adding 'recent file'

* This has been bugging me for ages, it's not a problem typically for users
  as the config would be saved on shutdown, but if you're debugging
  renderdoc and you kill the process (by stopping debugging) after loading
  a log but before closing the program, the recent file wouldn't be saved!

TurtleRockStudios/renderdoc_public,Lssikkes/renderdoc,Yours3lf/renderdoc,moradin/renderdoc,baldurk/renderdoc,TurtleRockStudios/renderdoc_public,Lssikkes/renderdoc,cgmb/renderdoc,victor-moya/renderdoc,cgmb/renderdoc,Anteru/renderdoc,michaelrgb/renderdoc,etnlGD/renderdoc,victor-moya/renderdoc,moradin/renderdoc,Lssikkes/renderdoc,Velro/renderdoc,Anteru/renderdoc,etnlGD/renderdoc,Yours3lf/renderdoc,Velro/renderdoc,baldurk/renderdoc,moradin/renderdoc,cgmb/renderdoc,adrianbu/renderdoc,michaelrgb/renderdoc,baldurk/renderdoc,etnlGD/renderdoc,etnlGD/renderdoc,moradin/renderdoc,Yours3lf/renderdoc,Velro/renderdoc,Anteru/renderdoc,baldurk/renderdoc,Anteru/renderdoc,cgmb/renderdoc,Zorro666/renderdoc,Anteru/renderdoc,victor-moya/renderdoc,googlestadia/renderdoc,Anteru/renderdoc,adrianbu/renderdoc,Lssikkes/renderdoc,Yours3lf/renderdoc,victor-moya/renderdoc,googlestadia/renderdoc,Velro/renderdoc,TurtleRockStudios/renderdoc_public,victor-moya/renderdoc,baldurk/renderdoc,moradin/renderdoc,Velro/renderdoc,googlestadia/renderdoc,adrianbu/renderdoc,victor-moya/renderdoc,etnlGD/renderdoc,Lssikkes/renderdoc,michaelrgb/renderdoc,moradin/renderdoc,TurtleRockStudios/renderdoc_public,Zorro666/renderdoc,TurtleRockStudios/renderdoc_public,etnlGD/renderdoc,adrianbu/renderdoc,googlestadia/renderdoc,Lssikkes/renderdoc,Zorro666/renderdoc,adrianbu/renderdoc,michaelrgb/renderdoc,googlestadia/renderdoc,Zorro666/renderdoc,Velro/renderdoc,Zorro666/renderdoc,Yours3lf/renderdoc,baldurk/renderdoc,michaelrgb/renderdoc,Yours3lf/renderdoc,cgmb/renderdoc,TurtleRockStudios/renderdoc_public,adrianbu/renderdoc,Anteru/renderdoc,Zorro666/renderdoc,googlestadia/renderdoc