Fix posts.css reference to all-posts.css

Author: ericgitangu

portfolio/templates/portfolio/posts.html

@@ -4,7 +4,7 @@
 
 {% block title%}{{title}}{%endblock%}
 {% block css_files%}
-    <link rel="stylesheet" href="{% static 'posts.css' %}">
+    <link rel="stylesheet" href="{% static 'all-posts.css' %}">
     <link rel='stylesheet' href="{% static 'base.css' %}">
 {% endblock %}
 {%block content%}