* Unregister non-matching serviceworkers
With the addition of the /assets url, users who visited a previous
version of the site now may have two active service workers, one with
the old scope `/` and one with scope `/assets`. This check for
serviceworkers that do not match the current script path and unregisters
them.
Also included is a small refactor to publicpath.js which was simplified
because AssetUrlPrefix is always present now. Also it makes use of the
new joinPaths helper too.
Fixes: https://github.com/go-gitea/gitea/pull/15823
- Add basic frontend unit testing infrastructure using jest in ESM mode
- Rename 'make test' to 'make test-backend'
- Introduce 'make test-frontend' and 'make test' that runs both
- Bump Node.js requirement to v12. v10 will be EOL in less than a month.
- Convert all build-related JS files to ESM.
I opted to run frontend tests run as part of the compliance pipeline because
they complete fast and are not platform-specific like the golang tests.
