This task is about implementing the changes necessary to ensure the "right people" are are included in the Reply Tool A/B test in the "right way."
=== Bucketing criteria
People who meet **all** of the "Conditions" listed below, ought to have a 50% of chance of being bucketed into the A/B test's `control` or `test` group.
**Conditions**
- Editing at the following Wikipedias: //TBD; see T267379.//
- Have **not** used the Reply Tool before.
-- In this context, "used" is being defined as people whose `discussiontools-editmode` preference is **empty**.
- People who are logged in
//Note: bucketing ought to be done a per wiki basis.//
=== Done
- [ ] The "Bucketing criteria" above have been implemented
//Note: verification that people are being bucketed as expected will happen in T268193.//