Compressed view (or, custom CSS)

[crsaracco]

There's a lot of extra whitespace in the marks list. I'd like a compressed view so I can see more mark titles at the same time. Something like less padding and smaller fonts would be a good start.

[cdevroe]

@crsaracco Feel free to create a PR so we can see what you have in mind.

[cdevroe]

@crsaracco Please give the 1.8 branch a try when you have time to see if you prefer this new design.