Spanish Translation for eqFTP UPDATE.

Hi, actually I tested the extension and founded that I'd made an error (""). However, now it's corrected and tested. So, please look boot pull requests. You can see the extension working in the picture bellow! 

Thanks,
Alex Fermon
![screenshot](https://cloud.githubusercontent.com/assets/3981106/3565290/b37ffa42-0ab3-11e4-9183-44bdbff3feef.png)