Harder, better, faster, stronger

Harder, better, faster, stronger
========================
*[proper version, merge this]*

What is included in this pull request?

* make.js file for **easy building** via nodejs
* Over **2x speed** increase for grid rendering!
   * 50 items with old script took took **619ms** to render on my machine
   * 50 items with new script takes **255ms** to render on my machine
* **Selector caching** system. Other people can use this to speed up the grid even more!

Selector cache example
-----------
old code
```javascript
$('th:eq(' + n + ')', g.hDiv);
```

new code
```javascript
g.cacheSel('th:eq(' + n + ')', 'hDiv');
```