Fix #70: Set config even if user does not have 'maharaws:configure' p…

…ermission

locallib.php

@@ -219,13 +219,18 @@ public function save_settings(stdClass $data) {
                 $this->set_config('key', $data->assignsubmission_maharaws_key);
                 $this->set_config('secret', $data->assignsubmission_maharaws_secret);
             }
-            $this->set_config('debug', false);
-            $this->set_config('remoteuser', false);
+
             $this->set_config('lock', $data->assignsubmission_maharaws_lockpages);
-            $this->set_config('username_attribute', 'email');
-            $this->set_config('archiveonrelease', $data->assignsubmission_maharaws_archiveonrelease);
+        } else {
+            // Set to existing config or default value for users that cannot see lock element.
+            $this->set_config('lock', $this->get_config('lock') ?: '0');
         }
 
+        $this->set_config('debug', false);
+        $this->set_config('remoteuser', false);
+        $this->set_config('username_attribute', 'email');
+        $this->set_config('archiveonrelease', $data->assignsubmission_maharaws_archiveonrelease);
+
         // Test Mahara connection.
         try {
             $data = $this->webservice_call("mahara_user_get_extended_context", array());