Hovering over ticks displays the tick index

[jespirit]

I also noticed this while working on Issue #882

I should also add that the tooltip does not move over the tick, it stays in the same place.

https://github.com/seiyria/bootstrap-slider/blob/59745c648eb9a4e937783c7177521219212112ab/src/js/bootstrap-slider.js#L1176-L1177

https://github.com/seiyria/bootstrap-slider/blob/59745c648eb9a4e937783c7177521219212112ab/src/js/bootstrap-slider.js#L1172-L1184

You can follow the steps below, and you'll notice the value of tooltip is the index of the tick.

1. Open a console
2. Move the handle to the middle (value of 5).
3. Hover over the rightmost tick once. Should display hover: 5
4. Repeat step 3 multiple times. Should display hover: 2

Note: Also try hovering over the leftmost tick.

console.log('hover:', mySlider.getValue());

https://jsfiddle.net/xq0cgoa5/

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