Remove references to webclient/ directory: #12
Remove references to webclient/ directory: #12

The .csproj file for the website-only Visual Studio "solution"
included references to the webclient directory, which doesn't exist
in this repository.  This commit removes the references to those
files, allowing the website to build correctly.

WorldWideTelescope/wwt-website,WorldWideTelescope/wwt-website,WorldWideTelescope/wwt-website