LibreOffice Fresh by default

Hello, I imagine it is in your to do list to update LibreOffice, since the version included in the last ISO is still 4.4.4.3 :sweat_smile:.

It would be very handy to have both distribution channels - Still and Fresh - but the Fresh version was installed by default, since it has the latest features, security and better compatibility with third-party file formats, especially OOXML.

We hope to transition to a LibreOffice Flatpak in the near future which we can keep updated independently of the rest of the OS