Add shuffle suggested responses functionality
- ported from external project, takes suggestedResponses [] (if present in the displayHtml.html object) and shuffles their order, to add an element of diversity to an experience (requires the front-end implement handling of this payload, which is part of the P22 UI, that a number of customers / partners currently use in production)
Set environment variable SHUFFLE_SUGGESTED_RESPONSES == true and uncomment lines 57-60 in conversation/node/services/lib/format.js to enable
What to check:
run tests. Tests cover stringified payload, regular JSON payload, and no suggestResponses present in payload