Device code url

[andybak]

Please change to /device

The shorter the better for situations where someone has to type it in VR or on other devices where typing is clunky. (plus this is the previous url so I won't need to change things on my end)

[jamesrampton]

This is done. I had to set APPEND_SLASH to False, which means that all other urls are like the original icosa.gallery urls without a slash.

If you want trailing slashes to be removed instead of Django's behavior of 404ing, I'll look at some middleware to handle this.