Fix #1984 -- fix mathjax support

Signed-off-by: Chris Warrick <kwpolska@gmail.com>

docs/manual.txt

@@ -1392,8 +1392,8 @@ Math
 ----
 
 Nikola supports math input via MathJax.  It is activated via the math roles and
-directives of reStructuredText and the usual LaTeX delimiters (``\(inline\)``
-and ``\[display\]``) for other input formats.
+directives of reStructuredText and the usual LaTeX delimiters
+(backslash-parentheses, backslash-brackets) for other input formats.
 
 To use mathematics in a post, you must add the ``mathjax`` tag.
 
@@ -1419,7 +1419,8 @@ like this:
     </script>
     """
 
-Inline mathematics are produced using the reST `math` **role** or the ``\(…\)`` delimiters:
+Inline mathematics are produced using the reST `math` **role** or the LaTeX
+backslash-parentheses delimiters:
 
 Euler’s formula: :math:`e^{ix} = \cos x + i\sin x`
 
@@ -1435,7 +1436,8 @@ In other input formats:
 
     Euler’s formula: \(e^{ix} = \cos x + i\sin x\)
 
-Display mathematics are produced using the reST `math` **directive** or the ``\[…\]`` delimiters:
+Display mathematics are produced using the reST `math` **directive** or the
+LaTeX backslash-brackets delimiters:
 
 .. math::
 

nikola/data/themes/base-jinja/templates/index_helper.tmpl

@@ -20,8 +20,11 @@
 
 {% macro mathjax_script(posts) %}
     {% if posts|selectattr("is_mathjax")|list %}
+        <script type="text/javascript"
+          src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
+        </script>
         <script type="text/x-mathjax-config">
-        MathJax.Hub.Config({tex2jax: {inlineMath: [['$latex ','$'], ['\\(','\\)']]}});</script>
-        <script src="/assets/js/mathjax.js"></script>
+        MathJax.Hub.Config({tex2jax: {inlineMath: [['$latex ','$'], ['\\(','\\)']]}});
+        </script>
     {% endif %}
 {% endmacro %}

nikola/data/themes/base-jinja/templates/post_helper.tmpl

@@ -86,8 +86,11 @@
 
 {% macro mathjax_script(post) %}
     {% if post.is_mathjax %}
+        <script type="text/javascript"
+          src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
+        </script>
         <script type="text/x-mathjax-config">
-        MathJax.Hub.Config({tex2jax: {inlineMath: [['$latex ','$'], ['\\(','\\)']]}});</script>
-        <script src="/assets/js/mathjax.js"></script>
+        MathJax.Hub.Config({tex2jax: {inlineMath: [['$latex ','$'], ['\\(','\\)']]}});
+        </script>
     {% endif %}
 {% endmacro %}

nikola/data/themes/base/templates/index_helper.tmpl

@@ -20,8 +20,11 @@
 
 <%def name="mathjax_script(posts)">
     %if any(post.is_mathjax for post in posts):
+        <script type="text/javascript"
+          src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
+        </script>
         <script type="text/x-mathjax-config">
-        MathJax.Hub.Config({tex2jax: {inlineMath: [['$latex ','$'], ['\\(','\\)']]}});</script>
-        <script src="/assets/js/mathjax.js"></script>
+        MathJax.Hub.Config({tex2jax: {inlineMath: [['$latex ','$'], ['\\(','\\)']]}});
+        </script>
     %endif
 </%def>

nikola/data/themes/base/templates/post_helper.tmpl

@@ -86,8 +86,11 @@
 
 <%def name="mathjax_script(post)">
     %if post.is_mathjax:
+        <script type="text/javascript"
+          src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
+        </script>
         <script type="text/x-mathjax-config">
-        MathJax.Hub.Config({tex2jax: {inlineMath: [['$latex ','$'], ['\\(','\\)']]}});</script>
-        <script src="/assets/js/mathjax.js"></script>
+        MathJax.Hub.Config({tex2jax: {inlineMath: [['$latex ','$'], ['\\(','\\)']]}});
+        </script>
     %endif
 </%def>