Set a disqus_identifier for every page, either from the object or from the url (part of #421)
Set a disqus_identifier for every page, either from the object or from the url (part of #421)

patricmutwiri/pombola,hzj123/56th,hzj123/56th,ken-muturi/pombola,patricmutwiri/pombola,geoffkilpin/pombola,ken-muturi/pombola,geoffkilpin/pombola,patricmutwiri/pombola,mysociety/pombola,patricmutwiri/pombola,geoffkilpin/pombola,hzj123/56th,mysociety/pombola,ken-muturi/pombola,geoffkilpin/pombola,hzj123/56th,hzj123/56th,ken-muturi/pombola,geoffkilpin/pombola,mysociety/pombola,patricmutwiri/pombola,hzj123/56th,ken-muturi/pombola,geoffkilpin/pombola,mysociety/pombola,ken-muturi/pombola,patricmutwiri/pombola,mysociety/pombola,mysociety/pombola