GitLab

- Fix layout overflow in repo file list.
- Fix invisible status icon in file view and commit list. In file view,
  the icon was moved to the left because I could not figure out a proper
  fix because of HTML tables.
- Added title attribute to commit messages.
- Fixed two CSS linter warnings in existing CSS.
- Fixed CI variable check in 'make css'.

Fixes: https://github.com/go-gitea/gitea/issues/7180