Styled web UI

Lightfish is a really nice tool for monitoring GlassFish Application servers but the web UI is currently not very handy in the web browser. 

This patch adds styling to the web UI that improves the usability. Because the lightview client shows this web UI too, it would may be useful to have a configuration UI in the client instead of the browser component.

![Screen Shot 2013-01-15 at 8 32 32 PM](https://f.cloud.github.com/assets/426412/68999/58fddbd6-5f4a-11e2-844d-1afb8f9322cc.png)