appsdk-bump-app-catalog 52 bumping sdk to 2574-54c97e1

sdk commit: RallySoftware/appsdk@d2b7739b67d14bcd672382ecf00b468a978b02b0
author: Jeff Ellis and Rob West
message: DE21669: Reinstate calling _saveBeforeDestroy on destruction of an EDP view

sdk commit: RallySoftware/appsdk@b3c8c06e460821c53740060eb93dbcf90dd1515d
author: jeffellis
message: Revert "DE21669: Reinstate calling _saveBeforeDestroy on destruction of an EDP v..."

sdk commit: RallySoftware/appsdk@e276b9c3ab4c3d21547805a64d7ca4af30589f99
author: jeffellis
message: Revert "Revert "DE21669: Reinstate calling _saveBeforeDestroy on destruction of ..."