added helper text to all 404s
added helper text to all 404s

sunlightlabs/billy,loandy/billy,openstates/billy,mileswwatkins/billy,openstates/billy,mileswwatkins/billy,loandy/billy,openstates/billy,mileswwatkins/billy,loandy/billy,sunlightlabs/billy,sunlightlabs/billy