wizards: Number Parsing

Change-Id: Ic8d9c97ee6bc48c8440c27c5ae4fc9bb20fa5acd
Reviewed-on: https://gerrit.libreoffice.org/11359
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>