Convert chart error bars tab page to widget UI

Change-Id: I9f3cb1fb3186e77b5c5ee57ff3e6086022c80bfd
Note: kept old resouce to allow dialog to be called by dlg_InsertErrorBars, util we find a way to have a dialog to call a tab page and access the resources. Once a solution is found, old- resources can be deleted, RangeEdit and RangeSelectionHelper can be nuked too.
Reviewed-on: https://gerrit.libreoffice.org/7198
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>