Remove intro popup, show username on home button

svelte/src/file_viewer/HomeButton.svelte

@@ -0,0 +1,41 @@
+<script>
+import PixeldrainLogo from "../util/PixeldrainLogo.svelte";
+export let embedded_viewer = false
+</script>
+
+{#if window.user.username === ""}
+	<a
+		href="/"
+		class="button button_home round"
+		target={embedded_viewer ? "_blank" : ""}
+		title="Go to the pixeldrain home page">
+		<PixeldrainLogo style="height: 1.6em; width: 1.6em; margin: 0 4px 0 0;"></PixeldrainLogo>
+	</a>
+{:else}
+	<a
+		href="/user"
+		class="button round"
+		target={embedded_viewer ? "_blank" : ""}
+		title="My account">
+		<PixeldrainLogo style="height: 1.6em; width: 1.6em; margin: 0;"></PixeldrainLogo>
+		<span class="username">
+			{window.user.username}
+		</span>
+	</a>
+{/if}
+
+<style>
+.button_home::after {
+	content: "pixeldrain";
+}
+
+@media (max-width: 600px) {
+	.button_home::after {
+		content: "pd";
+	}
+
+	.username {
+		display: none;
+	}
+}
+</style>