Fixed Issue #17026: Custom themes not uploading files (#1733)

* Fixed Issue #17026: Custom themes not uploading files

Code for backward compatiblity with custom themes that are expecting to upload images to upload subaction.
That happens as their options.twig are outdated.
Now that the upload subaction doesn't handle all uploads, weneed to dispatch to the proper.

* Fixed Issue #17026: Custom themes not uploading files

Code Review

application/controllers/admin/themes.php

@@ -172,6 +172,17 @@ public function tmp($id)
      */
     public function upload()
     {
+        // Code for backward compatiblity with custom themes that are expecting to upload images to upload subaction. 
+        // That happens as their options.twig are outdated.
+        // Now that the upload subaction doesn't handle all uploads, weneed to dispatch to the proper.
+        $action = returnGlobal('action');
+        if ($action == 'templateuploadimagefile') {
+            return $this->templateuploadimagefile();
+        } 
+        if ($action == 'templateupload') {
+            return $this->templateupload();
+        }
+
         $sTemplateName = Yii::app()->request->getPost('templatename');
         if (Permission::model()->hasGlobalPermission('templates', 'import') || Permission::model()->hasTemplatePermission($sTemplateName)) {
             Yii::app()->loadHelper('admin/template');