Runnymede signers must live, work, or study within the borough

This re-implements 1095be2427e7772a0b90b08dcdf003baf7b56509 for Runnymede petitions
site to run in compliance with the council's petitions schema (this was overridden
as a courtesy to the creator of a specific petition, now closed, since the original
deployment did not comply with the council's schema).