Show Custom orbit bar icon only for frontend and desktop

app/views/admin/sites/preference.html.erb

@@ -20,7 +20,7 @@
             
             <!-- Input Area -->
             <div class="input-area">
-              <div class="nav-name"><strong>Classification</strong></div>
+              <div class="nav-name"><strong>Classification</strong></div>    
               <ul class="nav nav-pills language-nav">
                 <li class="active">
                   <a href="#sidebar-nav" data-toggle="tab">Sidebar Nav</a>

app/views/layouts/_left_menu.html.erb

@@ -28,7 +28,8 @@
   </li>
   
 </ul>
-<% if @site.default_image.present? %>
+<% @url_path = "#{request.fullpath}".scan(/admin/)%>
+<% if (@site.default_image.present? && (!@url_path.include? "admin"))%>
 <style>
   #orbit-bar .orbitlogo {
   width: 20px;