add the ability to turn off stopPropagation and preventDefault

[aronduby]

Using this with UI-Bootstrap breaks the dropdown menus due to stopPropagation on the click event. This adds options to turn that and preventDefault.

[aotaduy]

+1
This feature will be very helpful for me too, i have the same problem with ui-bootstrap dropdown menu.

[PhillipRC]

+1
du-smooth-scroll sucking these events up prevents $routeProvider reloadOnSearch: false from doing its magic.