appsdk-bump-app-catalog 49 bumping sdk to 2568-e532e16

sdk commit: RallySoftware/appsdk@4c2f004208ac4d6b9bec0436c7a9392d22420d6a
author: Matt McClellan and Alan Hensel
message: DE21299 Clicking blocked during a new story now shows blocked reason
S69948: Users can drag features from the backlog into releases on a board (Release Planning Board)