Change panopticon_id type to String
Change panopticon_id type to String

We've moved panopticon to use mongo, so the ids are strings now.

alphagov/publisher,leftees/publisher,alphagov/publisher,leftees/publisher,telekomatrix/publisher,leftees/publisher,leftees/publisher,alphagov/publisher,theodi/publisher,theodi/publisher,telekomatrix/publisher,telekomatrix/publisher,telekomatrix/publisher,theodi/publisher,theodi/publisher