Register DataProtection Services in tests
React to fallback changes
Stop using context.Configuration.
Replace AddDefaultIdentity

Break it into
AddIdentity<>.AddEntityFrameworkStores.AddDefaultTokenProviders()
Replace IIdentityMessageService with IUserMessageProvider
React to GetDefaultServices changes
Samples fix for missing return url

Fixes: https://github.com/aspnet/Identity/issues/262
Fix samples
Add schema version to kproj files
Make Lockoutend date nullable
Merge branch 'MakeNullable' of https://github.com/aspnet/Identity into MakeNullable
Moved test to UserManagerBase