Merge pull request #19 from dimagi/cz

always do w=3 when saving xform docs in cloudant
extract is_cloudant into dimagi-utils
cloudant -> bigcouch
Merge pull request #20 from dimagi/mwhite

extract is_cloudant into dimagi-utils
expanding xforms.js couch filter to inclue HQSubmissions to index into ES
Merge pull request #21 from dimagi/expand_xform_filter

expanding xforms.js couch filter to inclue HQSubmissions to index into E...
add name property to forms