appsdk-bump-app-catalog 375 bumping sdk to 1770-e7260ca

sdk commit: RallySoftware/appsdk@c317b38ea4b49c385caf8d5c7c632ca8ad798b71
author: Stefan Kendall
message: S61660: Required field styling for all fields.

sdk commit: RallySoftware/appsdk@e7260ca65b85b890cceb1302dce359679184c7b8
author: Stefan Kendall
message: Revert "Revert "S61385: Prompt when user closes/reloads EDP with unsaved changes""