moved over couchapp stuff from grid_couchdb

made more sense to keep it all together.

deleted:    couchdb/cellmembership.json
deleted:    couchdb/morecellmembership.json
new file:   couchdb/views/grid_to_area/.gitignore
new file:   couchdb/views/grid_to_area/Gruntfile.js
new file:   couchdb/views/grid_to_area/app.js
renamed:    couchdb/views/cellmembership.js -> couchdb/views/grid_to_area/lib/cellmembership.json
new file:   couchdb/views/grid_to_area/lib/dump_airbasin_membership.js
new file:   couchdb/views/grid_to_area/lib/dump_airdistrict_membership.js
new file:   couchdb/views/grid_to_area/lib/dump_county_membership.js
new file:   couchdb/views/grid_to_area/lib/grid.sql
new file:   couchdb/views/grid_to_area/lib/mini_cell_membership.json
new file:   couchdb/views/grid_to_area/package.json
modified:   package.json
oh,  --save-dev adds to the root package.json

modified:   package.json
revert changes I accidentally made yesterday while faffing about with
grunt-couchapp testing