added ReporterLocation model, to give Reporters a home
added ReporterLocation model, to give Reporters a home

the reporters app doesn't depend on locations, but i'd like to provide
some sane way of integrating the two. this is just an idea.

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