[ImgBot] Optimize images

*Total -- 535.36kb -> 502.56kb (6.13%)

/images/partners/vsf_full.png -- 98.21kb -> 74.01kb (24.63%)
/fonts/fontawesome-webfont.svg -- 433.96kb -> 425.36kb (1.98%)
/images/partners/OVH.svg -- 3.19kb -> 3.19kb (0.12%)

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Author: ImgBotApp