Update HTTP status codes to modern codes (#18063)

* 2xx/3xx/4xx/5xx -> http.Status...
* http.StatusFound -> http.StatusTemporaryRedirect
* http.StatusMovedPermanently -> http.StatusPermanentRedirect

modules/context/repo.go

@@ -335,7 +335,7 @@ func RedirectToRepo(ctx *Context, redirectRepoID int64) {
 	if ctx.Req.URL.RawQuery != "" {
 		redirectPath += "?" + ctx.Req.URL.RawQuery
 	}
-	ctx.Redirect(path.Join(setting.AppSubURL, redirectPath))
+	ctx.Redirect(path.Join(setting.AppSubURL, redirectPath), http.StatusTemporaryRedirect)
 }
 
 func repoAssignment(ctx *Context, repo *repo_model.Repository) {