New icons

![icons](https://cloud.githubusercontent.com/assets/383331/3949169/c98bdd0a-26b1-11e4-8af2-281b4f4dadc1.png)

Icons used/adapted from:
https://www.iconfinder.com/iconsets/font-awesome
https://www.iconfinder.com/iconsets/world-issues
http://www.clker.com/clipart-127614.html
I checked the licenses and they appear to be fine but if someone else could confirm. Otherwise won't merge.