Feature/recaptcha v3 plus login (#202)

* [WIP] New GoogleReCAPTCHA code
Support for v3
v2-invisible doesn't work yet

* Add some notice about recaptchas versions

* Lets support only ReCaptcha v3

Too much mess ;)

* Fixes

system/templates/google_recaptcha.html.twig

@@ -0,0 +1,11 @@
+<script>
+	$(document).ready(function() {
+		grecaptcha.ready(function() {
+			grecaptcha.execute('{{ config.recaptcha_site_key }}', {action: '{{ action }}'}).then(function(token) {
+				if (token) {
+					document.getElementById('g-recaptcha-response').value = token;
+				}
+			});
+		});
+	});
+</script>