Added item click event, fixed debug logging

[ozgurg]

I added item click event. You can use by setting onItemClick option. Also it has these parameters: val, txt, li Example usage:

$('.flexdatalist').flexdatalist({
    ...
    onItemClick: function (val, txt, li) {
        console.log(val); // Value of item
        console.log(txt); // Text of item
        console.log(li); // Element of item
    }
    ...
});

And I fixed unnecessary console logging even if debug is false.

(Note: I don't know how you compressed the file before. So, I didn't change the minified file.)