LogoSystem: tweak image/text proportions in vertical mode
LogoSystem: tweak image/text proportions in vertical mode

Tweak proportions to obtain smaller images and bigger texts
in the full vertical mode. We obtained these values from a
design QA session.

https://phabricator.endlessm.com/T13438

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib