Stop propagation of click events during slide and add 'disableTouch' option

Stops propagation of click events in more circumstances. Clicks shouldn't fire while the slider is swiping. Also stops click events as early as possible in case subordinate controls contain click event handlers. This has allowed me to avoid considering the slider state when handling click events within complex elements inside the slide pages.

This edit also adds a new option, 'disableTouch' to quickly disable touch-base slide events. Whats the point? There are some instances in which I have been asked to turn the touch features off and this was easier than tearing out the whole Swipe control. Slide navigation buttons and auto-slide timers should still work fine.