updated default settings to use sqlite3
updated default settings to use sqlite3

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