Added a settings panel and some fixes

I created a settings panel with some items requested on #150 
![popc](https://f.cloud.github.com/assets/981105/2349128/6f647832-a560-11e3-9b70-99f9e31c6641.jpg)
 .
Also added a function called getLocales(dir), what gets all available locale files on ./language path.

To do:
- Proxy settings
- Improve "alwaysOnFocus" (it's using win.focus() for now)
- Add new texts to locale files

(As you can see, i'm not a designer.)