Hide subsites dropdown for collapsed sidebar
Hide subsites dropdown for collapsed sidebar

Its cut off otherwise, and not really operational.
This is consistent with hiding the "hi <user>" string
as default CMS behaviour.

wernerkrauss/silverstripe-subsites,mikenz/silverstripe-simplesubsites,mikenz/silverstripe-simplesubsites,mandrew/silverstripe-subsites,silverstripe/silverstripe-subsites,danaenz/silverstripe-subsites,silverstripe/silverstripe-subsites,wernerkrauss/silverstripe-subsites,danaenz/silverstripe-subsites,dnadesign/silverstripe-subsites,dnadesign/silverstripe-subsites,mandrew/silverstripe-subsites