widget found at: spreadsheet/data/validate

Change-Id: Ib4eed0e25f851f90e5dad0dee74a0729da10aa5e
Reviewed-on: https://gerrit.libreoffice.org/5254Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>