add some couchdb view stuff

new file:   couchdb/geocouch/designdocs/grid_cell.json

sql scratch to generate a big json list of grids to areas
new file:   couchdb/views/grid.sql

new file:   couchdb/views/screwyhpms.erl
Merge branch 'master' of https://github.com/jmarca/grid_data
made a exports.membership type thing

need to test, then incorporate into couchdb view

too big to just shove it in and try it