issue: mobile version link not reversable

Howdy

I noticed on my cell phone that if i click non-mobile it switches to full size which is wanted maybe but you can't go backwards to mobile again.

Same situation on the desktop.... can't return to full size

Thank you

Weird, I thought we'd fixed this already, apparently not.
Fixes in here https://github.com/ocproducts/composr/commit/010027da21e934d069031dfa047aa3ee258a6dc1 or the next release.