Add toast to Public LDB suggesting registering

src/lib/ldb/public-ldb.svelte

@@ -9,6 +9,7 @@
     import { getApiUrl } from "$lib/scripts/upstream";
     import TimeBar from "$lib/navigation/TimeBar.svelte";
     import { IconBus, IconSailboat } from "@tabler/icons-svelte";
+    import toast from "svelte-french-toast";
 
     let requestedStation;
     $: requestedStation = station;
@@ -143,6 +144,7 @@
     }
 
     onMount(() => {
+        toast("Register for more detailed departure boards")
         if (requestedStation && jsonData === null) {
             fetchData();
         }
@@ -363,11 +365,6 @@
 {/if}
 
 <style>
-    #timestamp {
-        margin: auto;
-        text-align: left;
-        font-size: 14px;
-    }
     .ldbTable {
         width: 100%;
         min-width: 300px;
@@ -402,9 +399,6 @@
         .transport-mode {
             width: 50px;
         }
-        #timestamp {
-            font-size: 16px;
-        }
     }
     @media (min-width: 1000px) {
         table {