PUBLIC MARKS from decembre with tags webextension & collection

Nightly Tester Tools is an extension that is a collection of useful tools for users of Firefox nightly builds. It was previously owned by Dave Townsend, but now is maintained by the Automation and Tools team. They're leading an effort to revive Nightly Tester Tools and make it even better. Nightly Tester Tools features the ability to disable add-on compatibility checks, crucial for nightly testers.