Upgrade dependencies and try to silence some accessibility warnings

svelte/src/admin_panel/ServerDiagnostics.svelte

@@ -0,0 +1,52 @@
+<script>
+import { createEventDispatcher, onMount } from "svelte";
+import { formatDuration } from "../util/Formatting.svelte";
+let dispatch = createEventDispatcher()
+
+export let running_since = ""
+
+$: profile_running = running_since != "0001-01-01T00:00:00Z" && running_since != ""
+
+const start = async () => {
+	if (!profile_running) {
+		const resp = await fetch(
+			window.api_endpoint+"/admin/cpu_profile",
+			{ method: "POST" }
+		);
+		if(resp.status >= 400) {
+			throw new Error(await resp.text());
+		}
+	} else {
+		window.open(window.api_endpoint+"/admin/cpu_profile")
+	}
+
+	dispatch("refresh")
+}
+
+let interval
+let running_time = "0s"
+onMount(() => {
+	interval = setInterval(() => {
+		if (profile_running) {
+			running_time = formatDuration(
+				(new Date()).getTime() - Date.parse(running_since),
+			)
+		}
+	}, 1000)
+
+	return () => {
+		clearInterval(interval)
+	}
+})
+
+</script>
+
+<a class="button" href="/api/admin/call_stack">Call stack</a>
+<a class="button" href="/api/admin/heap_profile">Heap profile</a>
+<button on:click={start} class:button_red={profile_running}>
+	{#if profile_running}
+		Stop CPU profiling (running for {running_time})
+	{:else}
+		Start CPU profiling
+	{/if}
+</button>