Small improvements around email change (#4415)

src/api/core/accounts.rs

@@ -559,6 +559,8 @@ async fn post_email_token(data: JsonUpcase<EmailTokenData>, headers: Headers, mu
         if let Err(e) = mail::send_change_email(&data.NewEmail, &token).await {
             error!("Error sending change-email email: {:#?}", e);
         }
+    } else {
+        debug!("Email change request for user ({}) to email ({}) with token ({})", user.uuid, data.NewEmail, token);
     }
 
     user.email_new = Some(data.NewEmail);

src/static/templates/email/change_email.hbs

@@ -2,5 +2,5 @@ Your Email Change
 <!---------------->
 To finalize changing your email address enter the following code in web vault: {{token}}
 
-If you did not try to change an email address, you can safely ignore this email.
+If you did not try to change your email address, contact your administrator.
 {{> email/email_footer_text }}

src/static/templates/email/change_email.html.hbs

@@ -9,7 +9,7 @@ Your Email Change
    </tr>
    <tr style="margin: 0; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; box-sizing: border-box; font-size: 16px; color: #333; line-height: 25px; -webkit-font-smoothing: antialiased; -webkit-text-size-adjust: none;">
       <td class="content-block last" style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; box-sizing: border-box; font-size: 16px; color: #333; line-height: 25px; margin: 0; -webkit-font-smoothing: antialiased; padding: 0; -webkit-text-size-adjust: none; text-align: center;" valign="top" align="center">
-         If you did not try to change an email address, you can safely ignore this email.
+         If you did not try to change your email address, contact your administrator.
       </td>
    </tr>
 </table>