move google analytics tracking to the header

Since the async method is being used, it's safer to put it on the header.
Change again the code for tracking

Seems like google is not eating it
Fix margins in thumbnails
render bullets in lists inside the margin box
Align thumbnail to the right instead of left

It usually adapts better to the text and feels nicer
add wordpress alignment classes to the css
change padding to em units in pre blocks
Add wordpress head and footer calls for extending themes
Move and reduce font declaration to the CSS

Will load at the start (not always good), but now has reduced load.
Style wordpress attachment captions
Add pingback and description on the header
Make pre text color lighter (#AEAEAE)
Show scrollbar on pre elements on overflow
Fix margin on thumbnails to adjust better with txt
Add more contrast to pre font color
Turn on even more contrast on code blocks
Turn on more contrast too on body and headers

Normal font gets #FFF
Higher sized fonts get #CCC
Add google-code-prettify plugin to highlight code

A slighly different sunburst theme is served locally
Change green to gray border on pre blocks
Remove modernizr (not being used, will not use)