* Step by 0.1 not 1
* Allow to enter negative values without selecting condensed/expanded

Change-Id: Ibe2898cf77f56e52a276166d2ee882fbd23452af
Reviewed-on: https://gerrit.libreoffice.org/24304Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>