Add new VS2015 intellisense files to .gitignore, remove sandcastle ext
Add new VS2015 intellisense files to .gitignore, remove sandcastle ext

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