Add configurable columns to directory view

svelte/src/filesystem/ErrorPage.svelte

@@ -39,6 +39,12 @@ onMount(() => {
 		<p>
 			This content has been removed for breaking the law.
 		</p>
+	{:else if $nav.navigation_error === "out_of_transfer"}
+		<h1>Traffic limit exceeded</h1>
+		<p>
+			The host user has exceeded the traffic limit of their subscription.
+			They need to upgrade to a higher subscription tier.
+		</p>
 	{:else}
 		<h1>Unknown error code</h1>
 		<p>