gitlex is a browser extension aiming to provide simple tweaks for GitLab's web pages.
- When creating a new Merge Request, automatically tick
Remove source branch when merge request is accepted
Get the .xpi. Mozilla now requires extensions to be signed. While I think that's great, the signing process is (as of now) more work than writing the simplest extensions, and users should have an option to bypass that. For now there is just such an option, but I don't know how long it will last.
Get the .crx and follow these instructions.