Fix sidebar coming up short on mobile
Fix sidebar coming up short on mobile

See https://gitlab.com/gitlab-org/gitlab-ce/issues/32735

stoplightio/gitlabhq,iiet/iiet-git,dreampet/gitlab,jirutka/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,dreampet/gitlab,jirutka/gitlabhq,axilleas/gitlabhq,t-zuehlsdorff/gitlabhq,dplarson/gitlabhq,dplarson/gitlabhq,jirutka/gitlabhq,stoplightio/gitlabhq,t-zuehlsdorff/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,jirutka/gitlabhq,iiet/iiet-git,dreampet/gitlab,iiet/iiet-git,axilleas/gitlabhq,axilleas/gitlabhq,iiet/iiet-git,dreampet/gitlab,axilleas/gitlabhq,dplarson/gitlabhq,dplarson/gitlabhq,stoplightio/gitlabhq