Resolve issues with unicode characters in author's name

I've been unable to reproduce the issue on macOS with Python 2.7/3.6 and Fedora with Python 2.7, but if it happens for others, then it's worth the change.

cps/templates/author.html

@@ -5,7 +5,7 @@
 {% if author is not none %}
 <section class="author-bio">
   {%if author.image_url is not none %}
-  <img src="{{author.image_url}}" alt="{{author.name}}" class="author-photo pull-left">
+  <img src="{{author.image_url}}" alt="{{author.name|safe}}" class="author-photo pull-left">
   {% endif %}
 
   {%if author.about is not none %}