@davidflanagan Hey im going to remove these lines changes in `pick.js` as there are no longer valid.
About the @2x images, as @rexboy7 has pointed out there is no need to extra code to use that hi-res wallpapers as everything is done at built time when generating the webapp.zip.

The only important code here is just some `px` to `rem` conversions and make the header fixed at the top position.

I will need to close this PR and open a new one with the same changesets as @rexboy7 is on holidays and he can't fix anything.