Rephrase client owner sales opportunities as sprint checkup task.

Merged Fox Piacenti requested to merge fox/BIZ-1478-checkup-task into master

This clarifies that the developer stories are explicitly meant to be used as food for thought while reflecting on new ways to create value for clients.

Note: A task has also been added to the sprint checklist to take some time thinking about ways we might anticipate the client's needs.

JIRA tickets: