translate comments in uibase

Change-Id: I1a187426ae41b9398c062f3c4998363b073e80f1
Reviewed-on: https://gerrit.libreoffice.org/9744
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>