Prepare quick release

Prepare quick release since even though only small changes but its
important. See commit #2fca100

cache/installedVersion.json

@@ -1,4 +1,4 @@
 {
   "id": 782014,
-  "tag_name": "v2.6.8"
+  "tag_name": "v2.6.9"
 }

system/plugins/urlify/URLify.php

@@ -115,12 +115,6 @@ class URLify {
             'Ý' => 'Y', 'Ỳ' => 'Y', 'Ỷ' => 'Y', 'Ỹ' => 'Y', 'Ỵ' => 'Y', 'ý' => 'y', 'ỳ' => 'y', 'ỷ' => 'y', 'ỹ' => 'y', 'ỵ' => 'y',
             'Đ' => 'D', 'đ' => 'd'
         ),
-        'ar' => array ( /* Arabic */
-            'أ' => 'a', 'ب' => 'b', 'ت' => 't', 'ث' => 'th', 'ج' => 'g', 'ح' => 'h', 'خ' => 'kh', 'د' => 'd',
-            'ذ' => 'th', 'ر' => 'r', 'ز' => 'z', 'س' => 's', 'ش' => 'sh', 'ص' => 's', 'ض' => 'd', 'ط' => 't',
-            'ظ' => 'th', 'ع' => 'aa', 'غ' => 'gh', 'ف' => 'f', 'ق' => 'k', 'ك' => 'k', 'ل' => 'l', 'م' => 'm',
-            'ن' => 'n', 'ه' => 'h', 'و' => 'o', 'ي' => 'y'
-        ),
         'sr' => array ( /* Serbian */
             'ђ' => 'dj', 'ј' => 'j', 'љ' => 'lj', 'њ' => 'nj', 'ћ' => 'c', 'џ' => 'dz', 'đ' => 'd',
             'Ђ' => 'Dj', 'Ј' => 'j', 'Љ' => 'Lj', 'Њ' => 'Nj', 'Ћ' => 'C', 'Џ' => 'Dz', 'Đ' => 'D'