Titan2 d demo

I moved stuff around so I can build snapserve and catalyst in one go, fixed up the cmakelists so it works for me if you use the tools/CMakeLists file.

Added first round of paraview integration. Just started and this is messy, so will be cleaned up lots. Working on live insitu viz now.

Will delete this repo and fork from the origin so that pull requests go there. Not sure how to change the origin of the github repo directly.