fixes for layout & spell selection on mobile/touch devices

[ashleybaldock]

#41 will fix the majority of these issues.

Layout is mostly fine but could be tweaked to look better on a vertical format screen (main thing is to wrap the config bar)
Drag & drop works, but it's a bit fiddly (especially deleting spells)
Long-press to delete, or long-press to show menu (from which you could select a spell to replace it with or delete) might be nice

[salinecitrine]

I haven't tested the site at all on mobile, and to be honest I don't have a lot of experience with mobile, so I don't know the best way to approach this

[ashleybaldock]

It's not that bad really - hacked on it in browser dev tools for 5mins and got it looking ok by changing some flex attributes and adding a couple divs (needs media queries etc. too). Low priority though :)

[salinecitrine]

that looks much better!