Merge branch 'Localize-labels-for-appearance-settings' into 'master'

Localize labels for appearance settings

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/179328



Merged-by: Alexander Turinske <aturinske@gitlab.com>
Approved-by: Dan MH <dmizzi-harris@gitlab.com>
Approved-by: Alexander Turinske <aturinske@gitlab.com>
Co-authored-by: Alexey Butkeev <abutkeev@netup.ru>