Somerville scraper: Parse multiple addresses
Somerville scraper: Parse multiple addresses

Quite a few entries in the reports and decisions table have compound
addresses. The scraper now collects all of them into an "all_addresses"
field on the JSON output and uses the first address for geocoding
purposes.

codeforboston/cornerwise,cityofsomerville/cornerwise,cityofsomerville/cornerwise,codeforboston/cornerwise,cityofsomerville/citydash,cityofsomerville/cornerwise,cityofsomerville/citydash,codeforboston/cornerwise,cityofsomerville/cornerwise,codeforboston/cornerwise,cityofsomerville/citydash,cityofsomerville/citydash