special upgrade machine

views/admin.erb

@@ -49,5 +49,17 @@
         <p><input class="btn btn-Action" type="submit" value="Ban"></p>
       </form>
     </div>
+
+    <div class="col col-50">
+      <h2>Upgrade to Supporter</h2>
+      <form action="/plan/update" method="POST">
+        <input type="hidden" name="plan_type" value="special">
+        <%== csrf_token_input_html %>
+        <p>This site will be upgraded to the supporter plan.</p>
+        <p>Site Name:</p>
+        <p><input type="text" name="username" placeholder="edwardsnowden" autocapitalize="off" autocorrect="off"></p>
+        <p><input class="btn btn-Action" type="submit" value="Ban"></p>
+      </form>
+    </div>
   </div>
 </div>

views/templates/email/supporter_upgrade.erb

@@ -0,0 +1,15 @@
+Hi there!
+
+A Neocities administrator has upgraded your account to supporter! Someone at Neocities must really like you (or your site). :)
+
+We won't charge you for the upgrade, so no worries on that. You can see some of the new features you can use by visiting our supporter page at https://neocities.org/plan
+
+We're looking forward to seeing the awesome things you will do with it.
+
+Thank you very, very much for supporting Neocities. It means a lot to us. We'll try our hardest to keep improving the site and stick to our core values (NO MARKETING OR ADVERTISING, EVER).
+
+If you have any questions or comments, or just want to say hi, feel free to contact us at https://neocities.org/contact. You can also reach us on Twitter at @neocitiesweb.
+
+From Penelope (the Neocities' cat/sysadmin), everyone that's helped work on Neocities, and on behalf of all our sites, our very best wishes for you (and your awesome web site).
+
+- The Neocities Team