custom mathjax setup

lms/templates/discussion/index.html

@@ -8,6 +8,25 @@
 </%block>
 
 <%block name="js_extra">
+  <!-- The configuration below is different from the main mathjax config because dollar signs make it easier
+       to integrate with Markdown.  -->
+  <script type="text/x-mathjax-config">
+    MathJax.Hub.Config({
+      tex2jax: {
+        inlineMath: [
+          ["$","$"],
+        ],
+        displayMath: [
+          ["$$","$$"],
+        ]
+      }
+    });
+  </script>
+
+  <!-- This must appear after all mathjax-config blocks, so it is after the imports from the other templates.
+       It can't be run through static.url because MathJax uses crazy url introspection to do lazy loading of
+       MathJax extension libraries -->
+  <script type="text/javascript" src="/static/js/vendor/mathjax-MathJax-c9db6ac/MathJax.js?config=TeX-MML-AM_HTMLorMML-full"></script>
   <script type="text/javascript" src="${static.url('js/vendor/Markdown.Converter.js')}"></script>
   <script type="text/javascript" src="${static.url('js/vendor/Markdown.Sanitizer.js')}"></script>
   <script type="text/javascript" src="${static.url('js/vendor/Markdown.Editor.js')}"></script>