Improve usability of Comment Notify

Problem/Motivation

Comment Notify could benefit from a general heuristic evaluation and usability tests to inform if anything about the module is worth improving from a usability perspective.

Proposed resolution

Implement a heuristic evaluation and series of usability tests with key audience groups.

Remaining tasks

1. ❌ Finalize plan for improving the usability of Comment Notify
2. ❌ Implement plan
3. ❌ Debrief results
4. ❌ Create follow up issues for usability improvements identified