accelerated mousewheel scrolling in firefox
assure mousewheel scrolling starts under certain circumstances without a tap beforehand
added mousewheel scrolling fix also to TransitionScrollStrategy.js
Merge pull request #217 from mborho/master

Accelerated mousewheel scrolling in Firefox and possible fix for unrecognized mousewheel scrolling (all browsers)

Reviewed-By: Ben Combee (ben.combee@palm.com)