Styling

I'm getting quite a few conflicts when pulling in from master, as master and styling are starting to diverge quite a bit. So I thought I'd do a pull request.

Comments on what still could be improved stylistically:
The twitter feed table should have wider tds - I spent forever trying and failing to fix this
The new checkpoint page needs some more work, probably shouldn't auto fill with checkpoints that already exist
What do you guys think of the chart and map on the show page?