appsdk-bump-app-catalog 594 bumping sdk to 2171-66fba5f

sdk commit: RallySoftware/appsdk@641c4f3ebc6a20c5fe0db083c95cef5978912932
author: Erika Brice
message: DE20569: Narrow area for blocking/unblocking story in the list view

sdk commit: RallySoftware/appsdk@66fba5f45ebe2de223e2f098393134c37d4562f3
author: Erika Brice
message: Revert "DE20569: Narrow area for blocking/unblocking story in the list view"