Fix recovery middleware to render gitea style page. (#13857)

* Some changes to fix recovery

* Move Recovery to middlewares

* Remove trace code

* Fix lint

* add session middleware and remove dependent on macaron for sso

* Fix panic 500 page rendering

* Fix bugs

* Fix fmt

* Fix vendor

* recover unnecessary change

* Fix lint and addd some comments about the copied codes.

* Use util.StatDir instead of com.StatDir

Co-authored-by: 6543 <6543@obermui.de>

vendor/github.com/go-chi/chi/middleware/clean_path.go

@@ -0,0 +1,28 @@
+package middleware
+
+import (
+	"net/http"
+	"path"
+
+	"github.com/go-chi/chi"
+)
+
+// CleanPath middleware will clean out double slash mistakes from a user's request path.
+// For example, if a user requests /users//1 or //users////1 will both be treated as: /users/1
+func CleanPath(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		rctx := chi.RouteContext(r.Context())
+
+		routePath := rctx.RoutePath
+		if routePath == "" {
+			if r.URL.RawPath != "" {
+				routePath = r.URL.RawPath
+			} else {
+				routePath = r.URL.Path
+			}
+			rctx.RoutePath = path.Clean(routePath)
+		}
+
+		next.ServeHTTP(w, r)
+	})
+}