[JUX2] Added new IcoMoon icon font set (Thanks @nonumber) (FR [#32057])

As written on original pull request from @nonumber here https://github.com/joomla-projects/joomla-cms/pull/204 :+1:  :

This PR adds a bunch of icons to the IcoMoon icon set used in Joomla.
Not only does it add the Joomla icon (used in https://github.com/joomla-projects/joomla-cms/pull/173) But also a bunch of other useful icons many have asked for that were missing.

This is the new set:
![uupmq](https://f.cloud.github.com/assets/744259/1124052/7dc3a242-1af8-11e3-9242-0cf784c53cfe.png)

The current iconset has **130** icons with an SVG of **68KB**
This new set has **209** icons with an SVG of **85KB**

Of course, all current icon class names will still work.

An overview of the new icon set can be seen here:
http://ndev.nl/jui/index.php/icons
That also shows you what icons are added and changed.

Original PR from @nonumber : https://github.com/joomla-projects/joomla-cms/pull/204

Related FR: http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=32057&start=0