Revert Zoo logo link to lead to dashboard, not website (#185)

Text-to-CAD Generator is sometimes a funnel toward Zoo's website, but
users can learn about Zoo and our APIs via links in the footer. Leave
the Zoo logo in the top nav to do what they usually do, return to the
"home page" of the app.

Author: franknoirot

src/components/Sidebar.svelte

@@ -34,7 +34,7 @@
 			{/if}
 			<span class="sr-only">Open menu</span>
 		</button>
-		<a href={paths.ZOO_SITE} rel="noopener noreferrer" target="_blank">
+		<a href={paths.DASHBOARD}>
 			<Logo className="h-6 hover:text-green" />
 		</a>
 		<a