feat(frontend): replace placeholder avatar with identicons

i don't actually know what the license on the kitten image is, and while
it's very unlikely, i don't want to get into legal trouble. it was only
ever supposed to be a temporary image, too.

identicons aren't the prettiest but at least they have a clear license
:3

Foxnouns.Frontend/src/routes/settings/members/[id]/+page.svelte

@@ -74,6 +74,7 @@
 	<div class="col-md">
 		<h4>{$t("settings.avatar")}</h4>
 		<AvatarEditor
+			name={data.member.name}
 			current={data.member.avatar_url}
 			alt={$t("avatar-tooltip", { name: data.member.name })}
 			update={updateAvatar}