[meta] New mobile display

If you haven’t recently tried the EA forum on a mobile device, I’d encourage you to test it out. An updated mobile-specific view rolled out yesterday, and if it’s causing any display issues for people I can figure out how to fix it.

(The new mobile view is not a full rewrite, it’s just some css tweaks to make things tolerable on mobile. So there are probably things that will still be awkwardly small. If there’s something that’s bothering you, let me know and I can have a look.)