Partial implementation of b1f42a0cdd
Docs update: https://codeberg.org/forgejo/docs/pulls/1197Closes#6561
* issue author only provided a reason for the option for mirrors, and there's no known reason for implementing the same option for templates yet, but this change will not make it harder to add that separately.
Pull requests and Actions do not make sense for mirrors to have them, at least by default. Pull requests because changes will get overridden by upstream, Actions get triggered and are failing, filling the actions table in the DB with unwanted content, and there's a security concern, too.
## Testing
* log in to https://v12.next.forgejo.org
* migrate repository
* example lightweight repo: https://codeberg.org/forgejo-contrib/delightful-forgejo
* tick "This repository will be a mirror"
* verify that the repo doesn't have these tabs: Pull requests, Actions
Testing note: there's `models/unit/unit_test.go`, but I don't completely get how it works and was not able to append it with the new setting while keeping it working.
Co-authored-by: Zettat123 <zettat123@gmail.com>
Idea-by: lng2020
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## Release notes
<!--URL:https://codeberg.org/forgejo/forgejo-->
- Features
- [PR](https://codeberg.org/forgejo/forgejo/pulls/7902): <!--number 7902 --><!--line 0 --><!--description Y29uZmlndXJhYmxlIGRlZmF1bHQgdW5pdHMgZm9yIG1pcnJvcnM=-->configurable default units for mirrors<!--description-->
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Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7902
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: 0ko <0ko@noreply.codeberg.org>
Co-committed-by: 0ko <0ko@noreply.codeberg.org>
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