Updated reCAPTCHA v2 to use api.js method

templates/header.html

@@ -17,7 +17,8 @@
 			{% for javascript in config.additional_javascript %}<script type="text/javascript" src="{{ config.additional_javascript_url }}{{ javascript }}"></script>{% endfor %}
 			{% endif %}
 		{% endif %}
-		{% if config.recaptcha %}<style type="text/css">{% raw %}
+		{% if config.recaptcha %}<script src="//www.google.com/recaptcha/api.js"></script>
+		<style type="text/css">{% raw %}
 			#recaptcha_area {
 				float: none !important;
 				padding: 0 !important;