Created requested, accepted and rejected email templates for requests

templates/mail/organisation-membership-accepted.html.twig

@@ -0,0 +1,16 @@
+{% block subject %}
+    {{site.title}} - organisation registration approved
+{% endblock %}
+
+{% block body %}
+<p>
+    Dear {{recipient.first_name}},
+</p>
+<p>
+    Your request to join the organisation {{organisation.name}} you submitted at {{site.title}} ({{site.uri.public}}) has been approved.
+</p>
+<p>
+    With regards,<br>
+    The {{site.title}} Team
+</p>
+{% endblock %}