Update jquery.bxslider.css

When a slide is running, some elements further in the page are moving at the same time (on chrome).
Some elements with percent on (width, margin, padding) are affected when a slide is running.

To fix that. I add this css to .bx-viewport div.

-webkit-transform: translatez(0);
-moz-transform: translatez(0);
-ms-transform: translatez(0);
-o-transform: translatez(0);
transform: translatez(0);
Merge pull request #486 from jonathantsilva/patch-1

Update jquery.bxslider.css