Update reveal.js to version 3.7.0

There is a new reveal.js version out. As we try to keep up with
upstream, time to integreate it.

This patch updates reveal.js in for CDN-using instances as well as the
ones using the libraries.

Checked that speaker view in slide mode still works, so no CSP change
needed.

https://github.com/hakimel/reveal.js/releases/tag/3.7.0
2d241b9300/lib/csp.js (L72-L74)
Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>

package.json

@@ -110,7 +110,7 @@
     "raphael": "git+https://github.com/dmitrybaranovskiy/raphael",
     "readline-sync": "^1.4.7",
     "request": "^2.88.0",
-    "reveal.js": "~3.6.0",
+    "reveal.js": "~3.7.0",
     "scrypt": "^6.0.3",
     "select2": "^3.5.2-browserify",
     "sequelize": "^3.28.0",

public/views/slide.ejs

@@ -18,7 +18,7 @@
         <% if(useCDN) { %>
         <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/fork-awesome/1.1.3/css/fork-awesome.min.css" integrity="sha256-ZhApazu+kejqTYhMF+1DzNKjIzP7KXu6AzyXcC1gMus=" crossorigin="anonymous" />
         <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/ionicons/2.0.1/css/ionicons.min.css" integrity="sha256-3iu9jgsy9TpTwXKb7bNQzqWekRX7pPK+2OLj3R922fo=" crossorigin="anonymous" />
-        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.6.0/css/reveal.min.css" integrity="sha256-ol2N5Xr80jdDqxK0lte3orKGb9Ja3sOnpAUV7TTADmg=" crossorigin="anonymous" />
+        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.7.0/css/reveal.min.css" integrity="sha256-9+Wg2bcNeiOMGXOUNqBdceY2lAH/eCiTDcdzHhHIl48=" crossorigin="anonymous" />
         <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/emojify.js/1.1.0/css/basic/emojify.min.css" integrity="sha256-UOrvMOsSDSrW6szVLe8ZDZezBxh5IoIfgTwdNDgTjiU=" crossorigin="anonymous" />
         <%- include build/slide-header %>
         <%- include shared/polyfill %>
@@ -88,8 +88,8 @@
 
         <script src="<%= serverURL %>/js/mathjax-config-extra.js"></script>
         <% if(useCDN) { %>
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.6.0/lib/js/head.min.js" integrity="sha256-+09kLhwACKXFPDvqo4xMMvi4+uXFsRZ2uYGbeN1U8sI=" crossorigin="anonymous"></script>
+        <script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.7.0/lib/js/head.min.js" integrity="sha256-CTcwyen1cxIrm4hlqdxe0y7Hq6B0rpxAKLiXMD3dJv0=" crossorigin="anonymous"></script>
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.6.0/js/reveal.min.js" integrity="sha256-ixSKHrWAL2k0mqVSRju9+to2/uZSEK9+kJRfdNBolG8=" crossorigin="anonymous"></script>
+        <script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.7.0/js/reveal.min.js" integrity="sha256-Xr6ZH+/kc7hDVReZLO5khBknteLqu5oen/xnSraXrVk=" crossorigin="anonymous"></script>
         <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js" integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8=" crossorigin="anonymous"></script>
         <script src="https://cdnjs.cloudflare.com/ajax/libs/velocity/1.4.0/velocity.min.js" integrity="sha256-bhm0lgEt6ITaZCDzZpkr/VXVrLa5RP4u9v2AYsbzSUk=" crossorigin="anonymous" defer></script>
         <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-mousewheel/3.1.13/jquery.mousewheel.min.js" integrity="sha256-jnOjDTXIPqall8M0MyTSt98JetJuZ7Yu+1Jm7hLTF7U=" crossorigin="anonymous" defer></script>