Sam&Rich: paramaterise the instance name of leenatron health check
Sam&Rich: make route cope with no monitoring entry
Rich&Sam: Merge healthcheck.
Merge pull request #304 from InsolvencyService/chomp-healthcheck

Chomp healthcheck
Merge branch 'master' into copy_changes
Fixed feature tests after first batch of copy changes
Added benefit amount help texts: one specific for JSA and one for other benefits