remove remote images, causing ssl warnings onhttps sites

Author: olymk2

draceditor/static/plugins/images/commonmark.png

@@ -1,4 +1,5 @@
 {% load i18n %}
+{% load static %}
 <div class="ui medium modal scrolling transition modal-help-guide">
   <i class="close icon"></i>
   <div class="header"><i class="help circle icon"></i> {% trans "Markdown Guide" %}</div>
@@ -20,7 +21,7 @@
           <td>&mdash;</td>
           <td>&mdash;</td>
           <td>&mdash;</td>
-          <td><img class="marked-emoji" src="https://assets-cdn.github.com/images/icons/emoji/smile.png"></td>
+          <td><img class="marked-emoji" src="{% static 'plugins/images/smile.png' %}"></td>
         </tr>
         <tr>
           <td>@[username]</td>
@@ -84,7 +85,7 @@
           <td>![Image][1]<br> &#8285;<br> [1]: http://url/b.jpg</td>
           <td>Ctrl+Shift+I</td>
           <td>Command+Option+I</td>
-          <td><img src="http://commonmark.org/help/images/favicon.png" width="36" height="36" alt="Markdown"></td>
+          <td><img src="{% static 'plguins/images/commonmark.png' %}" width="36" height="36" alt="Markdown"></td>
         </tr>
         <tr>
           <td>&gt; Blockquote</td>