Missing graphic elements and improved syntax highlighting

This PR  is replacing  https://github.com/tomchristie/mkdocs/pull/50 due to new branch structure.

Fixed multiple graphical issues with read the docs theme.

+ Fixed unset hrefs
![image](https://f.cloud.github.com/assets/2924505/2385725/8d53caea-a921-11e3-90c6-c404ee66f8d8.png)

+ Searchbox disabled until implemented
Searchbox is only confusing when not usable
![image](https://f.cloud.github.com/assets/2924505/2385693/17a9ec48-a921-11e3-9998-35df376dfd54.png)

+ Added styling for lists
![image](https://f.cloud.github.com/assets/2924505/2385714/6b4e344e-a921-11e3-900f-22f0aa015b58.png)

+ Added styling for tables
![image](https://f.cloud.github.com/assets/2924505/2385720/7bc68d12-a921-11e3-9bb7-5b82f9f6e0c4.png)

+ Improved syntax highlightning for both themes
highlight.js yelds much better results then google prettify
![image](https://f.cloud.github.com/assets/2924505/2385709/55f5d304-a921-11e3-87b8-2c935e84b6c3.png)