Add docs for running local web against dev#2563

rfontanarosa wants to merge 2 commits into

mastergoogle/ground-platform:masterfrom

rfontanarosa/2277/code-health-add-docs-for-running-local-web-against-devgoogle/ground-platform:rfontanarosa/2277/code-health-add-docs-for-running-local-web-against-devCopy head branch name to clipboard