UI tweaks for East Sussex

See https://github.com/mysociety/fixmystreet-commercial/issues/641 and https://github.com/mysociety/fixmystreet-commercial/issues/642

Have already had feedback on these, and addressed some concerns.
http://eastsussex.commercial.fixmystreet.staging.mysociety.org/report/92
This template has been forked from the wrong parent - base instead of fixmystreet.