Re-order display of Policy finder facets filters
Re-order display of Policy finder facets filters

This was on Ben Welby's suggestion, to make them more closely
match the order on other WH finder-esque pages, in particular
putting date filtering at the end, which matches other finders.

alphagov/policy-publisher,alphagov/policy-publisher,alphagov/policy-publisher,alphagov/policy-publisher