Scope Google autocomplete to just Cambridge addresses

If the app is just for Cambridge, it would be nice to just have the Google search autocomplete scoped for only Cambridge addresses, without cluttering the results with other municipalities.

Start by locating the JavaScript entry point that configures Google address autocomplete and read how search results are currently handled. Confirm whether the autocomplete request supports a Cambridge geographic restriction, then verify that results are limited to Cambridge addresses and that unrelated municipalities no longer appear.

Written by the indexing model from the issue text.