Formatting & appearance update, round 1

Just a few minor updates to help move development along...

1. Updated fight file to remove the embedded CSS and move it to an external stylesheet. 

2. Embedded a web font and customized the HP bar to feel more game-like.

3. When the HP bar drops below a certain percentage, it changes color to add excitement.

4. Rearranged some blocks and reformatted some text for a better user experience.

5. Added the "latest hit" block, and renamed the "latest hits" to be "battle log", which is closer to an MMO style.

6. Updated HTACCESS to have better static asset handling. (e.g. make an exception rather than blanket rules for file rewriting.).