[ImgBot] Optimize images
[ImgBot] Optimize images

/app/www/img/ionic.png -- 4.65kb -> 3.24kb (30.33%)

Signed-off-by: ImgBotApp <858471a511451575f9769176c7c5b94525007a21@gmail.com>

lotosbin/binbin-reader,lotosbin/binbin-reader,lotosbin/binbin-reader