improving error messaging on missing NEWNAME for apps#rename
improving error messaging on missing NEWNAME for apps#rename

vcgato29/heroku,macedo/heroku,greeca0204/heroku,gregburek/heroku,rkh/heroku,heroku/heroku,gregburek/heroku,gregburek/heroku,uhoh-itsmaciek/heroku,uhoh-itsmaciek/heroku,dickeyxxx/heroku,heroku/heroku,duypq94/heroku,Faisalawanisee/heroku,greeca0204/heroku,heroku/heroku,rkh/heroku,rkh/heroku,Faisalawanisee/heroku,greeca0204/heroku,macedo/heroku,dickeyxxx/heroku,duypq94/heroku,macedo/heroku,sancopanco/heroku,sancopanco/heroku,vcgato29/heroku,dickeyxxx/heroku,Faisalawanisee/heroku,vcgato29/heroku,sancopanco/heroku,duypq94/heroku