Convert multiple pages into SPA

svelte/src/layout/SortButton.svelte

@@ -5,7 +5,7 @@ export let asc = true
 export let sort_func: (field: string) => void
 </script>
 
-<button class:button_highlight={active_field === field} on:click={() => sort_func(field)}>
+<button on:click={() => sort_func(field)}>
 	{#if active_field === field}
 		{#if asc}↓{:else}↑{/if}
 	{/if}
@@ -18,6 +18,6 @@ button {
 	margin: 0;
 	line-height: 1em;
 	width: 100%;
-	text-align: center;
+	text-align: initial;
 }
 </style>