Added helper message component (not final). Improved stat card design. Started improving theme preview

Moonlight.Client/UI/Views/Admin/Sys/Theme.razor

@@ -9,4 +9,15 @@
     <NavTabs Index="1" Names="UiConstants.AdminNavNames" Links="UiConstants.AdminNavLinks" />
 </div>
 
-<ThemeSettings />
+<div class="mt-5">
+    <div class="mockup-browser bg-base-300/40">
+        <div class="mockup-browser-toolbar">
+            <div class="input bg-base-200">https://your-moonlight.instance</div>
+        </div>
+        <div class="flex h-80 justify-center">
+            <iframe src="http://localhost:5165/admin/system" class="w-full object-cover" >
+                
+            </iframe>
+        </div>
+    </div>
+</div>