i've made the navbar less hideous via css hackery

I've made the navbar less hideous via a lot of CSS hackery on my personal style. This has also been thrown at Denise because they agree Navbar Needs Work.

A/B comparison (another journal, current navbar vs. my style applied navbar)

Navbar, journal view

Navbar, reading page

Here's the DW custom stylesheet I wrote to do it. This has only been tested on Firefox and Mobile Safari, but I'm not doing anything super-surprising so I don't anticipate a lot of problems? But the navbar is mostly made with tables (kill me) so my CSS has to work with that which can produce some creaky results.