Converted master.js to jQuery

master.js was getting a little hard to maintain, so to make it easier to expand in the future, I converted it to use jQuery. As a result, ready.js is now no longer used.

This also fixes a few recent broken features:
* Highlighting a single column (#266)
* The feature permalink anchor

There are also a few small additions:
* The 'features implemented' count is now faintly tinted red or green corresponding to how many features are implemented.
* Additionally, there's a "bar graph" gray colouring behind the platform titles that visually denotes how many features are implemented, too:

![](http://i.imgur.com/WIiDAOY.png)
(As these are purely visual garnishes, I haven't felt the need to supply IE fallbacks for them.)