appsdk-bump-app-catalog 294 bumping sdk to 1508-a46f39c

sdk commit: RallySoftware/appsdk@a46f39c4ccdc623b12e8d120e9753e4b1d1f1394
author: Steven Boles
message: Revert "Revert "DE19854 Fixed done button throwing exceptions and not handling internal subpage correctly""