Gitfast plugin - Untracked files char not shown %

When showing the char % for untracket files, it was not being escaped
so there was shown a space in the place. It was also removing any char
that was right just after.

![Screen Shot 2012-12-28 at 17 35 37](https://f.cloud.github.com/assets/131353/34538/3292e6ac-5127-11e2-8c0c-3479e29b3de8.png)

fixes #1525 

Now after the path:

![Screen Shot 2012-12-28 at 17 49 38](https://f.cloud.github.com/assets/131353/34547/e44d6340-5127-11e2-9d72-2a614982900c.png)