`.content  > *` and Android scrolling
[This selector's comment](https://github.com/twbs/ratchet/blob/master/sass/base.scss#L51) wasn't clear to me. It seems that this exists to fix some sort of a bug? 

I'm experiencing issues with this selector on Android >= 4.0.3 < 4.4. It seems to allow `.content`'s children to be "overscrolled" past bottom edge of `.content`. 

I'm working with Ratchet 1.0.2, but the same issue occurs in the 2.0 demos as well.
