release_2853

All included PRs

PR #2032 - Avoid rescuing argument error in next node blocks
PR #2034 - Remove flow auditor code
PR #2035 - Convert pay-leave-for-parents to Ruby
PR #2036 - Add a link to the 2015 to 2016 CCG2 form
PR #2037 - Update the gem ordering to an alphabetic sort

PRs to check post-deployment

PR #2035 - Convert pay-leave-for-parents to Ruby
PR #2036 - Add a link to the 2015 to 2016 CCG2 form