Blazer app - connect DB, reconfig classes and fix errors, connect controlers

Job:
Blazer app - connect DB, reconfig classes and fix errors, connect controlers

- write code to Connect Blazer app to SQL 2008R2 DB,
- check supplied .NET Framwork classes(net4), reconfig for Microsoft.AspNetCore Classes usability and do some rework
.. decide which AspNetCore Classes can be subst for System.Web.UI classes and fix that

- on BlazorServer1 app:
connect Menu treeView (categories),
connect productRepeater (products)
connect type1 TabStrip (Type1Cat)
.. from Allcar.Core.UI,
establish URLs (Allcar.Core.HttpModule)

attached:
- BlazorServer app with Allcar.Blocks (clean), Allcar.Core (needs some rework)
- asp code for Categories (Menu), ProductRepeater (ProductList), TabStrip (Type1Cat) .. code put into Blazor app and connect
- blazer-test db (s2008R2)