New parameter to display a message at the top of the screen

ui/src/routes/+layout.svelte

@@ -29,6 +29,11 @@
     <title>ЕРІТА: MCQ and others courses related stuff</title>
 </svelte:head>
 
+{#if $user && $user.banner}
+    <div class="bg-danger text-white text-center py-1 fw-bolder">
+        {$user.banner}
+    </div>
+{/if}
 {#if isSRS}
     <div style="position: fixed; bottom: 20px; right: 20px; z-index: -1; background-image: url('img/srstamps.png'); background-size: cover; width: 125px; height: 125px;"></div>
 {/if}