Added highlighting functionality to render

You can now click on a square to highlight it. To unhighlight the square, click on it again. This shows detailed information about the square. I had to make the window bigger to fit the extra line in better. Clicking on a bot will show it's current action and if it is targeting a tile, that tile will be highlighted too.

The extra info under the field has 2 lines now.
determine_color now uses get_square_info to get the square's info.
Capitalized 'robot game' and 'green'
Added time speed bar (thanks @arlsr!)

#### Screenshots:
![Obstacle](https://f.cloud.github.com/assets/2147958/1610451/ea2dbd76-557e-11e3-86fe-7485050f8668.png)
![Bot](https://f.cloud.github.com/assets/2147958/1610452/f0137f46-557e-11e3-9fd6-909ec1149a28.png)
![Normal](https://f.cloud.github.com/assets/2147958/1610454/f89a6e68-557e-11e3-90c2-c32553898dbb.png)
![None](https://f.cloud.github.com/assets/2147958/1607857/3aed9bae-54a9-11e3-9340-dbd05eaa9598.png)

### Video
https://www.youtube.com/upload