Update to make removeDOMEvents only process once in slide mode

Author: jackycute

public/js/slide.js

@@ -49,6 +49,7 @@ const deps = [{
     const slides = window.RevealMarkdown.slidify(body, slideOptions)
     $('.slides').html(slides)
     window.RevealMarkdown.initialize()
+    removeDOMEvents($('.slides'))
     $('.slides').show()
   }
 }, {
@@ -109,15 +110,13 @@ function renderSlide (event) {
   if (window.location.search.match(/print-pdf/gi)) {
     const slides = $('.slides')
     let title = document.title
-    removeDOMEvents(slides)
     finishView(slides)
     document.title = title
     Reveal.layout()
   } else {
     const markdown = $(event.currentSlide)
     if (!markdown.attr('data-rendered')) {
       let title = document.title
-      removeDOMEvents(markdown)
       finishView(markdown)
       markdown.attr('data-rendered', 'true')
       document.title = title