update help and contributions sections
update help and contributions sections

directing folks with questions to Stack Overflow so others can benefit from troubleshooting threads
kevinrak9/r2w_map_spanish,cmpbrown/ga-enviro,mcheck/fusion-map-search,ZachMoreno/YourCoast,fairfaxdup/FusionTable-Map-Template-gh-pages,danielk123/FusionTable-Map-Template,chihacknight/lsc-voting-areas,cmpbrown/ga-enviro,fairfaxdup/FusionTable-Map-Template-gh-pages,machewgc/fullseats,machewgc/fullseats,thechadwix/FusionTable-Map-Template,chihacknight/lsc-voting-areas,pambroviak/washkowiak,codeforamerica/Somerville-Child-Care-Map,codeforamerica/Somerville-Child-Care-Map,kevinrak9/r2w_map_spanish,ZachMoreno/YourCoast,mcheck/fusion-map-search,thechadwix/FusionTable-Map-Template,danielk123/FusionTable-Map-Template,pambroviak/washkowiak