Better keyboard navigation

From the mailing list: https://lists.ozlabs.org/pipermail/patchwork/2015-March/001276.html

Are there any keyboard shortcuts for the web interface? I know it's
possible to tab between fields and use space to select/deselect, but
with three fields per patch, that's not a convenient way to select a
whole series.

I often want to mark a 20- or 30-patch series as "changes requested'
or "accepted" or whatever, and it's a lot of clickety-click work to do
that. It'd be awesome to have a "select entire series" button, but I
assume that's hard or it would already be implemented.

A simple "mark/move" key sequence would be a great help.