New icon for ConsoleZ

New Icon that looks more at home in Window 7/8.

Also updated icon loading code to be HighDPI aware.

![newicon1](https://cloud.githubusercontent.com/assets/782154/5235441/54e48510-77b5-11e4-8168-9fd67fbe1719.png)
![newicon2](https://cloud.githubusercontent.com/assets/782154/5235442/54e5d000-77b5-11e4-884c-f6ede365fbeb.png)