zenno/chara/convo: integrate umadump talk gallery

Fixes #47.

zenno/src/lib/Skill.svelte

@@ -20,7 +20,6 @@
 		skill_id: 0,
 		name: 'Skill data is loading...',
 		description: 'Skill data is still loading, or else something went wrong.',
-		group_skills: [],
 		group: 0,
 		rarity: 1,
 		group_rate: 1,

zenno/src/routes/chara/convo/+page.svelte

@@ -88,11 +88,7 @@
 	</div>
 	<div class="col-span-full">
 		<label for="talkgallery" class="block">
-			Select
-			<a href="https://werseter.github.io/umadump/" target="_blank" rel="noopener noreferrer">
-				<span class="inline-block font-mono">talk_gallery_data.json</span>
-			</a>
-			to hide read conversations.
+			Select <span class="inline-block font-mono">talk_gallery_data.json</span> to hide read conversations.
 		</label>
 		<input
 			type="file"