Trap errors from app handlers.
Trap errors from app handlers.

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