Cleanup and Introduce template automation

1.Cleaned up Nancy.Templates.csproj
2.Fixed formatting in web.config files
3.Adjusted project dependencies for correct build order
4.Introduced Nancy.Templates.Builder to auto generate template manifest & zip files on build based on solution project files
5.Added missing AssemblyInfo.cs in CSharp.EmptySelfHost csproj
6.Updated Template files
7.Nancyfied code style