def view_getSidebarLogo
      return VIEW_SIDEBARLOGO if defined? VIEW_SIDEBARLOGO
      dir = "#{Rails.root}/app/assets/images/lato/"
      if File.exist?("#{dir}/sidebar_logo.svg")
        return "lato/sidebar_logo.svg"
      end
      if File.exist?("#{dir}/sidebar_logo.png")
        return "lato/sidebar_logo.png"
      end
      if File.exist?("#{dir}/sidebar_logo.jpg")
        return "lato/sidebar_logo.jpg"
      end
      if File.exist?("#{dir}/sidebar_logo.gif")
        return "lato/sidebar_logo.gif"
      end
      return view_getApplicationLogo
    end
def view_getSidebarLogo
      return VIEW_SIDEBARLOGO if defined? VIEW_SIDEBARLOGO
      dir = "#{Rails.root}/app/assets/images/lato/"
      if File.exist?("#{dir}/sidebar_logo.svg")
        return "lato/sidebar_logo.svg"
      end
      if File.exist?("#{dir}/sidebar_logo.png")
        return "lato/sidebar_logo.png"
      end
      if File.exist?("#{dir}/sidebar_logo.jpg")
        return "lato/sidebar_logo.jpg"
      end
      if File.exist?("#{dir}/sidebar_logo.gif")
        return "lato/sidebar_logo.gif"
      end
      return view_getApplicationLogo
    end
This function return the url of sidebar logo.