Add workaround for image resizing within pinax blog articles

The "alt" attribute of the images determines their visible size.
This is *bad* :(

kroetenzaeune/templates/pinax/blog/blog_base.html

@@ -9,6 +9,10 @@
 {% block body_class %}blog{% endblock %}
 
 {% block body_main %}
+    <style type="text/css">
+        img[alt=full] { width: 100%; }
+        img[alt=half] { width: 49%; }
+    </style>
     <div class="row blog-container">
         <div class="col-md-8 blog-content">
             <main>