*: use "Liberation Sans" explicitly in ODT printouts
When these printouts were made, cloudooo did not had so many fonts as today, and it was picking up "Liberation Sans" for the "Arial" used in these templates;
Since slapos@135cbe43 ( yes, 5 years ago ) we have more fonts, and since then the rendering of these printout changed, a "Roman" font was selected instead.
This changes the templates to use explicitly "Liberation Sans", which makes the printouts use the old looks even on newer cloudooo .