Xubuntu 18.10: Documentation

FLYER UPDATE:
General:
– Add a direct link to the download page
Front page:
– Replace screenshot with one from 18.04
What can I do with Xubuntu?:
– Modify the text to be more about the Xubuntu experience as a whole rather than highlight specific apps (with names)?
In the Ubuntu ecosystem:
– Ubuntu does not use Unity any more...
Software in Xubuntu:
– Replace "from GNOME and KDE" with "from other desktop environments", or maybe just "with different toolkits like Qt"?
  – I'd drop mention of GNOME and KDE, and dependencies (a bit out of scope for a flashy flyer) and just say that it can run any Linux applications [lyz]
Help & Support:
– Mention official docs first under the Help & Support section (same with website)?
Local communities:
– Do we want to keep the community photo?
  – I'm inclined to drop mention of LoCos, there aren't many active ones these days [lyz]
– In general, the flyer is very wordy, people like pretty things. Maybe replace the LoCo section with a section about our beautiful community-contributed default backgrounds [lyz]
– Adjust the Contribute section and mention it's volunteer-driven [lyz]
– Link to blog and social media stuff [lyz]

Work items:
[xubuntu-doc] Update website feature tour: POSTPONED
[xubuntu-doc] Update flyer to match 18.04: POSTPONED