remove filter FILTER_SANITIZE_SPECIAL_CHARS when save settings

system/controllers/settings.php

@@ -157,9 +157,6 @@ switch ($action) {
             }
             // Save all settings including tax system
             foreach ($_POST as $key => $value) {
-                $key = filter_var($key, FILTER_SANITIZE_SPECIAL_CHARS);
-                $value = filter_var($value, FILTER_SANITIZE_SPECIAL_CHARS);
-
                 $d = ORM::for_table('tbl_appconfig')->where('setting', $key)->find_one();
                 if ($d) {
                     $d->value = $value;

system/lan/english.json

@@ -653,5 +653,7 @@
     "Http_Chap": "Http-Chap",
     "Hotspot_Authentication_Method__Make_sure_you_have_changed_your_hotspot_login_page_": "Hotspot Authentication Method. Make sure you have changed your hotspot login page.",
     "Business": "Business",
-    "": ""
+    "": "",
+    "Source": "Source",
+    "Destination": "Destination"
 }