[ImgBot] Optimize images

*Total -- 214.97kb -> 198.17kb (7.82%)

/public/assets/mobile-icons/apple-icon-120x120.png -- 8.89kb -> 7.21kb (18.94%)
/public/assets/mobile-icons/apple-icon-114x114.png -- 8.18kb -> 6.71kb (18.03%)
/public/assets/mobile-icons/favicon-96x96.png -- 6.45kb -> 5.46kb (15.33%)
/public/assets/mobile-icons/apple-icon-144x144.png -- 12.26kb -> 10.39kb (15.31%)
/public/assets/mobile-icons/apple-icon-152x152.png -- 12.94kb -> 11.06kb (14.51%)
/public/assets/mobile-icons/apple-icon-72x72.png -- 4.50kb -> 3.91kb (13.09%)
/public/assets/mobile-icons/android-icon-192x192.png -- 17.28kb -> 15.11kb (12.55%)
/public/assets/mobile-icons/apple-icon-180x180.png -- 16.77kb -> 14.68kb (12.44%)
/public/assets/mobile-icons/apple-icon-76x76.png -- 4.73kb -> 4.15kb (12.16%)
/public/assets/mobile-icons/apple-icon-60x60.png -- 3.71kb -> 3.36kb (9.52%)
/public/assets/mobile-icons/apple-icon-57x57.png -- 3.39kb -> 3.10kb (8.53%)
/public/assets/mobile-icons/favicon-32x32.png -- 2.06kb -> 1.90kb (7.78%)
/public/assets/mobile-icons/cube.svg -- 4.97kb -> 4.67kb (6.07%)
/public/assets/images/prev.png -- 1.33kb -> 1.27kb (4.26%)
/public/assets/images/next.png -- 1.32kb -> 1.27kb (3.85%)
/public/assets/fonts/glyphicons-halflings-regular.svg -- 106.19kb -> 103.92kb (2.14%)

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