New fields and parameters

Adding 'color_states', 'text_sortable', 'gfonts' fields. 
Adding 'direction' parameter to 'color_gradient' (Horizontal / Vertical).
Adding 'number' parameter to 'text' field.

![screen-2013-01-08-4 36 28 PM](https://f.cloud.github.com/assets/1606655/51145/9ba34b88-59c3-11e2-8e0c-5faf858cc3ec.png)
![screen-2013-01-08-4 42 40 PM](https://f.cloud.github.com/assets/1606655/51146/9ba356dc-59c3-11e2-8864-7942d32d5769.png)
![screen-2013-01-08-4 43 01 PM](https://f.cloud.github.com/assets/1606655/51147/9bc2c472-59c3-11e2-9ee0-9eeab08e6bb9.png)
![screen-2013-01-08-4 45 21 PM](https://f.cloud.github.com/assets/1606655/51148/9bc0fed0-59c3-11e2-9db8-701024c518d1.png)