Add header to Settings page.

lib/pages/settings.dart

@@ -1,5 +1,9 @@
+// Flutter
 import 'package:flutter/material.dart';
 
+// Local
+import '/widgets/cards.dart';
+
 /// TODO:
 /// - Export DB (JSON?)
 /// - Import DB (JSON?)
@@ -14,8 +18,13 @@ class SettingsPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Center(
-      child: Text(
-        "No settings yet. :)",
+      child: Column(
+        children: [
+          TitleCard(title: "Settings"),
+          Text(
+            "No settings yet. :)",
+          ),
+        ],
       ),
     );
   }