appsdk-bump-app-catalog 324 bumping sdk to 1592-91c9ff0

sdk commit: RallySoftware/appsdk@91c9ff0c16e6dea7088c666f1be6b4f138467021
author: Jeff Ellis
message: DE19540 Paypal sub data is screwed somehow. Typedef for HR returns Feature instead of the lowest level PI type.