Moved languages + added rule "framework"

I moved the language folder under the component per best practices since Joomla 1.6.

I created a new rule, "framework" attempting to spot most commonly-used deprecated functions that fail on Joomla 3, and raising a flag on a few errors or anomalies.

I added CSS3 gradients behind the boxes and improved readability with slightly larger fonts.
![framework](https://f.cloud.github.com/assets/3932841/2239537/af1a973a-9c3d-11e3-9e77-974757d4bba8.png)