Add jdownloader instructions

svelte/src/user_home/APIKeys.svelte

@@ -1,6 +1,7 @@
 <script>
 import { formatDate } from "../util/Formatting.svelte";
 import Spinner from "../util/Spinner.svelte";
+import ConnectApp from "./ConnectApp.svelte";
 
 let loading = false
 let loaded = false
@@ -88,6 +89,8 @@ const logout = async (key) => {
 	</div>
 {/if}
 
+<ConnectApp></ConnectApp>
+
 <section>
 	{#if !loaded}
 		<div class="highlight_yellow">