Some entities aren't available for the configuration

[yuliaGradova]

When trying to configure certain entities, such as Member, MembershipPayment, School, they are not available in the selection list. This appears may be related to their namespace Boxfusion.SheshaFunctionalTests.Common.Domain.Domain - entities with this namespace may be getting filtered out or ignored.

To Reproduce

1. Go to CS
2. Create the form and drag and drop DataContext
3. Try to configure Entity type using mentioned entites
4. Observe that the entities are not available for the selection

Expected behavior
The entities should be available for configuration

Screenshots