Support Chinese, Japanese, Arabic etc. for slug

Support Chinese, Japanese, Arabic etc. for the slug (post url, tag and
category).

system/htmly.php

@@ -1157,15 +1157,29 @@ post('/admin/import', function () {
 
 // Show Config page
 get('/admin/config', function () {
+
+    $user = $_SESSION[config("site.url")]['user'];
+    $role = user('role', $user);
+
     if (login()) {
         config('views.root', 'system/admin/views');
-        render('config', array(
-            'title' => 'Config - ' . blog_title(),
-            'description' => blog_description(),
-            'canonical' => site_url(),
-            'bodyclass' => 'config',
-            'breadcrumb' => '<a href="' . site_url() . '">' . config('breadcrumb.home') . '</a> &#187; Config'
-        ));
+	    if ($role === 'admin') {
+            render('config', array(
+                'title' => 'Config - ' . blog_title(),
+                'description' => blog_description(),
+                'canonical' => site_url(),
+                'bodyclass' => 'config',
+                'breadcrumb' => '<a href="' . site_url() . '">' . config('breadcrumb.home') . '</a> &#187; Config'
+            ));
+		} else {
+            render('denied', array(
+                'title' => 'Config page - ' . blog_title(),
+                'description' => blog_description(),
+                'canonical' => site_url(),
+                'bodyclass' => 'denied',
+                'breadcrumb' => '',
+            ));
+        }
     } else {
         $login = site_url() . 'login';
         header("location: $login");

system/includes/dispatch.php

@@ -548,7 +548,7 @@ function flash($key, $msg = null, $now = false)
 
 function dispatch()
 {
-    $path = urldecode($_SERVER['REQUEST_URI']);
+    $path = $_SERVER['REQUEST_URI'];
 
     if (config('site.url') !== null)
         $path = preg_replace('@^' . preg_quote(site_path()) . '@', '', $path);

system/includes/functions.php

@@ -2521,7 +2521,9 @@ EOF;
     echo '<li><a href="' . $base . 'edit/profile">Edit profile</a></li>';
     echo '<li><a href="' . $base . 'admin/import">Import</a></li>';
     echo '<li><a href="' . $base . 'admin/backup">Backup</a></li>';
+    if ($role === 'admin') {
     echo '<li><a href="' . $base . 'admin/config">Config</a></li>';
+    }
     echo '<li><a href="' . $base . 'admin/clear-cache">Clear cache</a></li>';
     echo '<li><a href="' . $base . 'admin/update">Update</a></li>';
     echo '<li><a href="' . $base . 'logout">Logout</a></li>';