Convert multiple pages into SPA

svelte/src/user_home/Subscription.svelte

@@ -1,20 +1,18 @@
 <script>
 import Euro from "util/Euro.svelte"
-import LoadingIndicator from "util/LoadingIndicator.svelte";
 import SuccessMessage from "util/SuccessMessage.svelte";
 import PatreonActivationResult from "./PatreonActivationResult.svelte";
+import { loading_finish, loading_start } from "lib/Loading";
 
-let loading = false
 let subscription = window.user.subscription.id
 let subscription_type = window.user.subscription.type
 let success_message
 
 const update = async (plan) => {
-	loading = true
-
 	const form = new FormData()
 	form.append("subscription", plan)
 
+	loading_start()
 	try {
 		{
 			const resp = await fetch(
@@ -43,13 +41,11 @@ const update = async (plan) => {
 	} catch (err) {
 		success_message.set(false, "Failed to update subscription: "+err)
 	} finally {
-		loading = false
+		loading_finish()
 	}
 }
 </script>
 
-<LoadingIndicator loading={loading}/>
-
 <section>
 	{#if window.location.hash === "#checkout_complete"}
 		<div class="highlight_green">