Tweak templates

app/templates/lookup.html

@@ -5,7 +5,7 @@
     <p>Interact with an ActivityPub object via its URL or look for a user using <i>@user@domain.tld</i></p>
 
     <form class="form" action="{{ url_for("get_lookup") }}" method="GET">
-        <input type="text" name="query" value="{{ query if query else "" }}">
+        <input type="text" name="query" value="{{ query if query else "" }}" autofocus>
         <input type="submit" value="Lookup">
     </form>
     {% if ap_object and ap_object.ap_type == "Person" %}