add admin nav link

views/templates/userTexts.php

@@ -14,6 +14,8 @@
                 <a class="btn btn-secondary" href="/home" id="back">
                     Back to Home
                 </a>
+                <a id="admin-link" class="btn btn-secondary"
+                   href="/admin" hidden>Admin</a>
                 <button id="logout" class="btn btn-danger">Logout</button>
             </div>
         </div>
@@ -33,6 +35,7 @@
         </form>
     </main>
     <script src="/js/auth.js"></script>
+    <script src="/js/nav.js"></script>
     <script src="/js/userTexts.js"></script>
 </body>
 </html>