Add method to display operation (uploading) progress in UI message

Aleksander Machniak

2014-11-20 0b36d151572e050b51d82e7429fee847ebb33e22

 program/lib/Roundcube/html.php

@@ -153,7 +153,7 @@
            $attr = array('src' => $attr);
        }
        return self::tag('img', $attr + array('alt' => ''), null, array_merge(self::$common_attrib,
            array('src','alt','width','height','border','usemap','onclick')));
            array('src','alt','width','height','border','usemap','onclick','onerror')));
    }

    /**