Fix user event mail template

src/mail_templates/user_event.ejs

@@ -0,0 +1,15 @@
+<%if (format === 'text') { %>
+
+Dear Admin,
+
+User with name '<%= username %>' (<%= email %>) was <%= event %> in the Cloudron at <%= fqdn %>.
+
+You are receiving this email because you are an Admin of the Cloudron at <%= fqdn %>.
+
+Thank you,
+User Manager
+
+<% } else { %>
+
+<% } %>
+

src/mail_templates/user_html.ejs

@@ -1 +0,0 @@
-User <%= username %> was <%= event %>, just letting you know.

src/mail_templates/user_text.ejs

@@ -1 +0,0 @@
-User <%= username %> was <%= event %>, just letting you know

src/mailer.js

@@ -133,8 +133,7 @@ function mailUserEventToAdmins(user, event) {
             from: config.get('mailUsername'),
             to: adminEmails.join(', '),
             subject: 'User ' + event,
-            text: render('user_text.ejs', { username: user.username, event: event }),
-            html: render('user_html.ejs', { username: user.username, event: event })
+            text: render('user_event.ejs', { fqdn: config.fqdn(), username: user.username, email: user.email, event: event, format: 'text' }),
         };
 
         enqueue(mailOptions);