Fix multiple provinces/constituencies being displayed.

WIP. I haven't tested that this doesn't break anything else yet, or checked if I need to use the new config setting anywhere else either.

As described in the main commit message, this PR adds a new config setting to specify position titles that should be used to associate People with Places. I've put some example titles in the config too, but this needs more work, see: #1200.

Closes #1200