These changes are quite independent and trivial, so I don't want to open too many PRs. * https://github.com/go-gitea/gitea/pull/29882#discussion_r1529607091 * the `f.Close` should be called properly * the error message could be more meaningful (https://github.com/go-gitea/gitea/pull/29882#pullrequestreview-1942557935) * https://github.com/go-gitea/gitea/pull/29859#pullrequestreview-1942324716 * the new translation strings don't take arguments * https://github.com/go-gitea/gitea/pull/28710#discussion_r1443778807 * stale for long time * #28140 * a form was forgotten to be changed to work with backend code (cherry picked from commit 226231ea27d4f2b0f09fa4efb39501507613b284) Conflicts: templates/repo/issue/view_content/pull.tmpl discarded because unexplained templates/status/404.tmpl implemented differently in Forgejo
