fix(gestures): fixes issue with non-clickable links

[kennethcachia]

@ajoslin @ThomasBurleson

This is a possible fix for #1792.
Broken demo in #1792: http://codepen.io/ThomasBurleson/pen/MYRvwy?editors=100
Fixed demo in #1792: http://codepen.io/kennethcachia/pen/azgwWg

Current status
Demo: http://codepen.io/kennethcachia/pen/PwrjGp?editors=100

// callback is executed
$('#id').on('click', function() { .. });

// callback is executed
$('#id').on('$md.pressdown', function() { .. }); 

// callback is executed
document.querySelector('#id').on('click', function() { .. }); 

// callback is not executed
document.querySelector('#id').on('$md.pressdown', function() { .. });

It's not a complete fix but might be enough for this and similar issues in 0.9.0. Makes sense?

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