appsdk-bump-app-catalog 649 bumping sdk to 2259-5839f91

sdk commit: RallySoftware/appsdk@893b099d8fc8cd379c502935c70519a7d8a96c22
author: Erika Brice
message: DE21116: card discussion status on IE9 and Safari is wacked

sdk commit: RallySoftware/appsdk@5839f9194922568ba031448a1130fa4f39bd54ca
author: Garston Tremblay
message: DE21088: Adding new card displays but then hides