web: note when submissions list is loaded but empty

web/src/app/submissions/page.tsx

@@ -44,7 +44,7 @@ export default function SubmissionInfoPage() {
 		}, 50);
 	}, [])
 
-	if (!submissions || submissions.length == 0) {
+	if (!submissions) {
 		return <Webpage>
 			<main>
 				Loading...
@@ -52,6 +52,14 @@ export default function SubmissionInfoPage() {
 		</Webpage>
 	}
 
+	if (submissions && submissions.length == 0) {
+		return <Webpage>
+			<main>
+				Submissions list is empty.
+			</main>
+		</Webpage>
+	}
+
 	return (
 		// TODO: Add filter settings & searchbar & page selector
 		<Webpage>