disable content type check, just pretty warning if not text/plain
disable content type check, just pretty warning if not text/plain

kris-sigur/openwayback,bitzl/openwayback,efundamentals/openwayback,JesseWeinstein/openwayback,iipc/openwayback,emijrp/openwayback,bitzl/openwayback,nla/openwayback,bitzl/openwayback,sul-dlss/openwayback,ukwa/openwayback,nlnwa/openwayback,sul-dlss/openwayback,ukwa/openwayback,zubairkhatri/openwayback,nla/openwayback,ukwa/openwayback,nla/openwayback,nlnwa/openwayback,SpiralsSeminaire/openwayback,emijrp/openwayback,SpiralsSeminaire/openwayback,chasehd/openwayback,nlnwa/openwayback,MohammedElsayyed/openwayback,SpiralsSeminaire/openwayback,chasehd/openwayback,JesseWeinstein/openwayback,efundamentals/openwayback,sul-dlss/openwayback,kris-sigur/openwayback,bitzl/openwayback,zubairkhatri/openwayback,kris-sigur/openwayback,efundamentals/openwayback,JesseWeinstein/openwayback,efundamentals/openwayback,zubairkhatri/openwayback,JesseWeinstein/openwayback,JesseWeinstein/openwayback,iipc/openwayback,zubairkhatri/openwayback,MohammedElsayyed/openwayback,chasehd/openwayback,kris-sigur/openwayback,SpiralsSeminaire/openwayback,nla/openwayback,efundamentals/openwayback,MohammedElsayyed/openwayback,kris-sigur/openwayback,emijrp/openwayback,emijrp/openwayback,emijrp/openwayback,nlnwa/openwayback,SpiralsSeminaire/openwayback,nlnwa/openwayback,iipc/openwayback,bitzl/openwayback,nla/openwayback