Add async attribute to coral-embed scripts

client/coral-admin/src/containers/Configure/EmbedLink.js

@@ -37,7 +37,7 @@ class EmbedLink extends Component {
     const streamElementId = `coral_talk_${nonce}`;
     const embedText = `
 <div id="${streamElementId}"></div>
-<script src="${coralJsUrl}" onload="
+<script src="${coralJsUrl}" async onload="
   Coral.Talk.render(document.getElementById('${streamElementId}'), {
     talk: '${talkBaseUrl}'
   });

views/article.ejs

@@ -23,7 +23,7 @@
     <p><%= body %></p>
     <p><a href="/admin">Admin</a> - <a href="/assets">All Assets</a></p>
     <div id='coralStreamEmbed'></div>
-    <script src="/embed.js" onload="
+    <script src="/embed.js" async onload="
       Coral.Talk.render(document.getElementById('coralStreamEmbed'), {
         talk: '/',
         asset: <%= asset_url ? asset_url : 'undefined' %>