appsdk-bump-app-catalog 196 bumping sdk to almci-master-2815-998b170

sdk commit: RallySoftware/appsdk@b4250fe03aa625e3aefdec5676969693dc790380
author: Ben Ridge
message: DE22287 - misplaced the var Ext = window.Ext line

sdk commit: RallySoftware/appsdk@0d69dcb028bfb8c353ff3df826e14ab08712217d
author: Carlton Schuyler and Darrell Hamilton
message: Un-Revert "Making TreeGrid remember its root options, for pagination purposes."

sdk commit: RallySoftware/appsdk@c46ffbb138e551fa1a5576cb03d63b244ea2c3fc
author: Ben Ridge
message: DE22288: Undoing change on CustomFilterButtonController that switched models with types and broke filtering by type

sdk commit: RallySoftware/appsdk@998b170a5afa81a67230a80bca4efa2e299a1fff
author: Andrew Grauch, Katie Thompson and Jonathan Baker
message: S71692: MI page - Handling update of project on a Milestone