React to EF API removal
Fix add phone number views in sample
Remove old V1 method: FindByUsernamePassword

Replaced with FindUser/CheckPassword

Fixes https://github.com/aspnet/Identity/issues/223
SignOut all identity cookies except for RememberMe

Fixes https://github.com/aspnet/Identity/issues/211
Adopt new conventions for AddIdentity
Remove AddDefaultIdentity methods

Replace with AddIdentity.AddEntityFrameworkStores.
AddDefaultTokenProviders
Merge fixes
Cleanup using