🎨 Rename open.php to existing.php

Signed-off-by: Luke Tainton <luke@tainton.uk>

app/public/existing.php

@@ -0,0 +1,39 @@
+<?php
+    $PAGE_NAME = "Existing requests";
+    require_once __DIR__ . "/../includes/header.php";
+?>
+
+
+
+<!-- Begin page content -->
+<main role="main" class="flex-shrink-0">
+
+  <?php if (is_signed_in()) { ?>
+    <section class="jumbotron text-center">
+      <div class="container">
+        <h1>Open requests</h1>
+        <p class="lead text-muted">
+          Here you can find all of your requests, and other requests that you are subscribed to.
+        </p>
+      </div>
+    </section>
+
+      <section>
+        <p>This page is currently under construction.</p>
+      </section>
+    <?php } else { ?>
+      <section>
+        <div class='alert alert-danger alert-dismissible fade show' role='alert'>
+          You need to log in to access this page.
+          <button type='button' class='close' data-dismiss='alert' aria-label='Close'>
+            <span aria-hidden='true'>&times;</span>
+          </button>
+        </div>
+      </section>
+    <?php } ?>
+
+</main>
+
+<?php
+    require_once __DIR__ . "/../includes/footer.php";
+?>