All of these samples are intended as something you could copy and use to start your own ASP.NET Core project in Visual Studio 2017. The WebApp in each solution is yours to customize and add your own custom functionality. There is no "cloudscribe" source code in the samples they only have NuGet dependencies on cloudscribe libraries and they have been configured with example Startup.cs code to get things working.
To get the big picture of what cloudscribe provides for you see the Introduction and Documentation at cloudscribe.com
If you have questions or feedback or just want to be social, say hello in our gitter chat room. I try to monitor that room on a regular basis while I'm working, but if I'm not around you can leave message.
If you find any bugs please post an issue!