Fix visual bugs

- fix top circle position;
- fix circle background colors for each theme;
- special CSS for LCARS theme;
- change CSS selector for top navbar `<li>`: after removing the first
  item, the "old" second item became the first one.
- use a better color for all themes;
- hide submenu counter during animation;
- hide the other counter when submenu is opened (mobile too)

Signed-off-by: RD WebDesign <github@rdwebdesign.com.br>

scripts/pi-hole/js/utils.js

@@ -372,12 +372,10 @@ function checkMessages() {
           ? "There are " + data.message_count + " warnings." + more
           : "There is one warning." + more;
 
-      $("#top-warning-count").prop("title", title);
-      $("#top-warning-count").removeClass("hidden");
+      $(".warning-count").prop("title", title);
       $(".warning-count").text(data.message_count);
       $(".warning-count").removeClass("hidden");
     } else {
-      $("#top-warning-count").addClass("hidden");
       $(".warning-count").addClass("hidden");
     }
   });