Added parcel zone to proposal detail view
Added parcel zone to proposal detail view

Also: don't show parcel details that aren't available.

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