adds max width to map popups. closes #8
adds max width to map popups. closes #8

varmas/bostongreenmap,varmas/bostongreenmap,varmas/bostongreenmap,codeforboston/bostongreenmap,varmas/bostongreenmap,codeforboston/bostongreenmap,codeforboston/bostongreenmap,varmas/bostongreenmap,codeforboston/bostongreenmap,codeforboston/bostongreenmap