* bower ->libman

* default settings for libman

Fixes error on dotnet publish:

It was not possible to find any compatible framework version
  The specified framework 'Microsoft.NETCore.App', version '1.0.0' was not found.

* Changed class to match filename.

* Implement Builder Pattern for ToDoItems in tests, and adjust EfRepositoryShould to use it.

* Move test utility classes to root of Tests project.

* Using ToDoItemBuilder in other ToDo tests.

* Complete ToDoItemBuilder by adding other ToDoItem field methods.

Replace BaseWebTest with CustomWebApplicationFactory

Upgrade to .net core 2.1

Links to Razor Pages demo (from an MVC view, and from within an existing Razor Page to link to a sibling Razor Page).

Created RazorPage for populating database TODO items (to mirror controller). Extracted common Populate method to static class.

Removed RuntimeFrameworkVersion values hardcoded into projects so that the newest (i.e. 2.1) runtime would be used, to get rid of "System.Runtime 4.2.1.0 file not found" errors when running integration tests.

Remove DotNetCliToolReference elements for "Microsoft.AspNetCore", "Microsoft.VisualStudio", and "Microsoft.EntityFrameworkCore" packages (upgrade to 2.1 replaces these with global tools).

Added complete method and removed links to not existing actions.

And cleaning up some unused views.

Upgrade packages.

Update ToDoItemMarkCompleteShould