Unsupervised training callbacks don't work with Microsoft.NET.Sdk.Web SDK

[olegtarasov]

Hi!
In the .csproj file I changed the header from
<Project Sdk="Microsoft.NET.Sdk.Web">
to
<Project Sdk="Microsoft.NET.Sdk">
and it all worked.
I have no explanation for this.

Originally posted by @VZMDeadAngel in #26 (comment)