Add 'autoplay' and 'loop' query params to watch page

src/invidious/views/watch.ecr

@@ -12,10 +12,8 @@
 <div class="h-box">
     <video style="width:100%" playsinline poster="<%= thumbnail %>" title="<%= HTML.escape(video.title) %>" 
         id="player" class="video-js vjs-16-9" data-setup="{}" 
-        <% if preferences %>
-        <% if preferences.autoplay %>autoplay<% end %>
-        <% if preferences.video_loop %>loop<% end %>
-        <% end %>
+        <% if autoplay %>autoplay<% end %>
+        <% if video_loop %>loop<% end %>
         controls>
         <% if listen %>
             <% audio_streams.each_with_index do |fmt, i| %>