Add some docstring docs to scripted.py
Add some docstring docs to scripted.py

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