Fix whitespace issues

In the process of prototyping a date slider UI I locally installed jQRangeSlider today via Twitter Bower; I had previously given it a quick shot on JSFiddle referencing the assets used on [ghusse.github.io/jQRangeSlider](http://ghusse.github.io/jQRangeSlider/).
While everything went fine on JSFiddle, I ran into errors when trying to replicate the JSFiddle locally using the version installed via Twitter Bower:

![console](https://cloud.githubusercontent.com/assets/21834/3689090/e679682a-133c-11e4-8e3b-f5809667a8da.png)

After a quick inspection it turned out that "non-breaking white space unicode characters" (a quick search lead me to believe that the "Â" character visible in the Chrome Developer Tools might be such a thing ;)) caused the problem (both on my Mac and Windows dev boxes):

![blank](https://cloud.githubusercontent.com/assets/21834/3689247/5981b3d0-133e-11e4-965a-41a65b99e9b8.png)

I searched all occurences of that character in the jQRangeSlider repository, replaced them with "regular" whitespace – and now things are working fine again.