[ImgBot] Optimize images

*Total -- 695.96kb -> 648.42kb (6.83%)

/images/partners/vsf_full.png -- 98.21kb -> 74.01kb (24.63%)
/mstile-150x150.png -- 6.75kb -> 5.94kb (12.1%)
/agence_magento_2048.png -- 65.87kb -> 58.13kb (11.75%)
/agence_magento_1024.png -- 21.68kb -> 19.43kb (10.39%)
/agence_magento_512.png -- 8.95kb -> 8.09kb (9.68%)
/apple-touch-icon.png -- 9.21kb -> 8.42kb (8.58%)
/android-chrome-192x192.png -- 9.96kb -> 9.22kb (7.36%)
/agence_magento.svg -- 5.29kb -> 4.92kb (7.07%)
/android-chrome-512x512.png -- 25.50kb -> 24.48kb (3.97%)
/agence_magento_256.png -- 3.97kb -> 3.82kb (3.83%)
/fonts/fontawesome-webfont.svg -- 433.96kb -> 425.36kb (1.98%)
/favicon.svg -- 3.42kb -> 3.41kb (0.14%)
/images/partners/OVH.svg -- 3.19kb -> 3.19kb (0.12%)

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

Author: ImgBotApp