added template category.html

theme/templates/category.html

+{% extends "index.html" %}
+{% block title %}{{ l[lang].title_prefix }}{{ l[lang].sitename }}{{ l[lang].title_suffix }} - {{ category }}{%endblock%}
+{% block content %}
+	<section>
+		{{ render_section({"type": "category", "category": category.slug, "num": 5000 }) }}
+	</section>
+{% endblock content %}