Integrate a new strategy for displaying “free retriggers” from subtests. It should be the new default.
The UI should still keep the old strategy around, via a user-facing toggle mechanic.
- performance: all replicates are stored remotely as JSON files + there's a JSON for each subtest displayed + there can be MANY subtests. We'll likely need a scalable solution.
- refactor: will definitely be required to have both strategies available.
Jira link: https://jira.mozilla.com/browse/FXP-1485