`frame-XY` class

[pisi]

Requested two or three times and one that will be quite helpful for frame-based fine-tuning graphical representations of features inside the instance - heck, even hotspots would be then viable using CSS only in 1.1.3 with it.

I think about a regular expression search & destroy (I mean replace ;) exposing frame as class names like frame-13 on the .jquery-reel-overlay outter-most DOM wrapper, so that everything inside (including indicators) can be adjusted with CSS.