Update job dashboards to include language that indicates that they auto-refresh and at what interval

[ccostino]

The dashboard that we currently have for all of our send jobs doesn't explain that the page auto-updates at a set interval, so it's not clear to users that they can stay on the page and they'll see updated information as messages are processed (especially for a large batch job):

We should update the display a bit to explain a little more of what is happening and what users can expect using plain language.

Implementation Sketch and Acceptance Criteria

• Work with the team to figure out some appropriate updates to the job dashboard view that use plain language and/or clear visuals to inform users what to expect and how the page works
• Create a mockup of the changes and user test it within our team and our partners to make sure the changes make sense and are an improvement
• Implement the change(s) in the job dashboard templates
• Adjust any test as necessary

Security Considerations

• N/A with this change; this is providing clearer instructions on the display of a page that requires user access to the system.