support _design and _doc_ids filters.
support _design and _doc_ids filters.

benoitc/bigcouch,breezjw/bigcouch,georgemarshall/bigcouch,benoitc/bigcouch,Asquera/bigcouch,benoitc/bigcouch,Asquera/bigcouch,andrejb/cloudant_bigcouch,cloudant/bigcouch,breezjw/bigcouch,linearregression/bigcouch,cloudant/bigcouch,PerilousApricot/bigcouch,linearregression/bigcouch,kofron/bigcouch,georgemarshall/bigcouch,linearregression/bigcouch,PerilousApricot/bigcouch,kofron/bigcouch,PerilousApricot/bigcouch,andrejb/cloudant_bigcouch,cloudant/bigcouch,andrejb/cloudant_bigcouch,andrejb/cloudant_bigcouch,PerilousApricot/bigcouch,andrejb/cloudant_bigcouch,bittorrent/bigcouch,PerilousApricot/bigcouch,linearregression/bigcouch,kofron/bigcouch,Asquera/bigcouch,georgemarshall/bigcouch,Asquera/bigcouch,benoitc/bigcouch,kofron/bigcouch,georgemarshall/bigcouch,breezjw/bigcouch,georgemarshall/bigcouch,andrejb/cloudant_bigcouch,cloudant/bigcouch,bittorrent/bigcouch,georgemarshall/bigcouch,linearregression/bigcouch,kofron/bigcouch,cloudant/bigcouch,cloudant/bigcouch,breezjw/bigcouch,bittorrent/bigcouch,linearregression/bigcouch,PerilousApricot/bigcouch,bittorrent/bigcouch,andrejb/cloudant_bigcouch,bittorrent/bigcouch,Asquera/bigcouch,kofron/bigcouch,benoitc/bigcouch,Asquera/bigcouch,bittorrent/bigcouch,benoitc/bigcouch,breezjw/bigcouch,cloudant/bigcouch,breezjw/bigcouch,linearregression/bigcouch