Added wpf project for 3d viewer
Revert "Added wpf project for 3d viewer"

This reverts commit de7e8225f374a3b60fb3a3f58be5f74540a9d6e1.
Can now open a new wpf window from spreadsheet
Now using helix-toolkit.

Added initial code for display
DataRowProvider now deals with header line

Assumes a header line and exposes that as a seperate property.
DataGridViewVirtual updated appropriately.
Will now display points in a 3D view
Removed gridlines from xaml