added first_name and last_name to search options
added first_name and last_name to search options

ehealthafrica-ci/rapidsms,lsgunth/rapidsms,eHealthAfrica/rapidsms,catalpainternational/rapidsms,ehealthafrica-ci/rapidsms,peterayeni/rapidsms,caktus/rapidsms,caktus/rapidsms,lsgunth/rapidsms,ehealthafrica-ci/rapidsms,peterayeni/rapidsms,ken-muturi/rapidsms,peterayeni/rapidsms,catalpainternational/rapidsms,dimagi/rapidsms,unicefuganda/edtrac,dimagi/rapidsms,lsgunth/rapidsms,eHealthAfrica/rapidsms,peterayeni/rapidsms,ken-muturi/rapidsms,catalpainternational/rapidsms,unicefuganda/edtrac,catalpainternational/rapidsms,caktus/rapidsms,ken-muturi/rapidsms,unicefuganda/edtrac,eHealthAfrica/rapidsms,lsgunth/rapidsms