Multiple click fix

[netvillage]

Suggestion.
Generally you a class selector which primes all the the elements with the class="FB_reactions"

	j$('.FB_reactions').facebookReactions({
			postUrl: "/react/add/"
	});

However, if we want to call on multiple individual elements like this (You may want multiple calls if you are doing something like Infinite scroll, or maybe dynamically adding stuff). ie.
j$('#MyReaction').facebookReactions...
j$('#MyReaction2').facebookReactions...
It gets funky, and will make multiple onClick calls (and thus ajax posts) when select one of the emotes from the pop-up (actually the number will be the number of elements below it on the page).

So I made a small change

I changed this line
   $('.emoji').on("click",function (e) {
to
  $('.emoji').off("click").on("click",function (e) { 

which just removes any click handler it may have set before adding new one

In addition, I didn't want to create the 'faces' div over again, so I added this:

let faceAdded=0; // stop extra appends
(function($) {
....
	if (!faceAdded++)  <--- added this 
		$(_react_html).appendTo($('body'));