appsdk-bump-app-catalog 236 bumping sdk to almci-master-2886-970a3b9

sdk commit: RallySoftware/appsdk@e0d87430f64f8251581514e347dcbf7fc0405674
author: Eli Soman and Dave Thompson
message: DE22391: Filtering the treegrid with the buffered renderer is creating white space at the top of the grid

sdk commit: RallySoftware/appsdk@556bc2ab0a4b46ea75821f956d29b821dd0f388f
author: Robert Everett
message: S70214: Fix discrepancies between field rendering on board view and list view

sdk commit: RallySoftware/appsdk@970a3b9bae8f16779a2baf0097d2021cf1182f0b
author: Rick Lansky and Andrew Grauch
message: DE22403 - PI Kanban App doesn't preserve filter settings when changing types