minor edit for VDS/CalVAD docs, without ts field

use doc.data[0] not doc.ts, because there is not doc.ts

modified:   couchdb/views/grid_to_area/app.js
modified:   couchdb/views/grid_to_area/lib/dump_airdistrict_membership.js
modified:   couchdb/views/grid_to_area/lib/dump_county_membership.js
oops, forgot to rename the files in the prior commit

the *_vds versions are for the database carb%2Fgrid%2Fstate4k

new file:   couchdb/views/grid_to_area/lib/dump_airbasin_membership_vds.js
new file:   couchdb/views/grid_to_area/lib/dump_airdistrict_membership_vds.js
new file:   couchdb/views/grid_to_area/lib/dump_county_membership_vds.js

reverted the mistaken edits on these
modified:   couchdb/views/grid_to_area/lib/dump_airdistrict_membership.js
modified:   couchdb/views/grid_to_area/lib/dump_county_membership.js