made article tag separator configurable via TAG_LIST_SEPARATOR

pelican-bootstrap3/templates/includes/taglist.html

@@ -1,9 +1,13 @@
 {% if article.tags %}
-<span class="label label-default">Tags</span>
-{% for tag in article.tags %}
-	<a href="{{ SITEURL }}/{{ tag.url }}">{{ tag }}</a>
-    {% if not loop.last %}
-        /
+    {% if TAG_LIST_SEPARATOR is not defined %}
+        {% set TAG_LIST_SEPARATOR = "/" %}
     {% endif %}
-{% endfor %}
+
+	<span class="label label-default">Tags</span>
+	{% for tag in article.tags %}
+		<a href="{{ SITEURL }}/{{ tag.url }}">{{ tag }}</a>
+	    {% if not loop.last %}
+	        {{ TAG_LIST_SEPARATOR }}
+	    {% endif %}
+	{% endfor %}
 {% endif %}