add a page for tickets from gitea (#2)

Co-authored-by: Blake Ridgway <blake@blakeridgway.com>
Reviewed-on: #2

templates/admin/dashboard.html

@@ -10,6 +10,7 @@
       <a href="/admin/uploads" class="btn btn-outline">Uploads</a>
       <a href="/admin/newsletter" class="btn btn-outline">Newsletter</a>
       <a href="/admin/changelog" class="btn btn-outline">Changelog</a>
+      <a href="/admin/outages" class="btn btn-outline">Outages</a>
       <a href="/" class="btn btn-outline">View Site</a>
       <form method="POST" action="/admin/logout" class="inline-form">
         <button type="submit" class="btn btn-outline">Logout</button>