17.10 UI Freeze - wallpaper & slideshow

[Will Cooke]

Hi docs team,

I'm expecting to take delivery of the new default wallpaper today and will
get it uploaded ASAP, but there is still a chance that it will miss UI
freeze tomorrow.

I can't update the slideshow until I have the new wallpaper and mascot, so
that will be a job for first thing tomorrow morning.

Sorry for the delay, I'm going to head in to the office today and expedite
things.

Cheers, Will