fix and test the linking to the style switcher

Signed-off-by: Brian S. Stephan <bss@incorporeal.org>

incorporealcms/templates/base.html

@@ -69,10 +69,10 @@ applyStyleFromCookie();
             {% if not loop.last %} » {% endif %}
             {% endfor %}
         </div>
-        {% if page_styles %}
+        {% if config.PAGE_STYLES %}
         <div class="styles">
-            {% for style in page_styles %}
-            <a href="#" onclick="setStyle('{{ style }}'); return false;">[{{ style }}]</a>
+            {% for style, stylesheet in config.PAGE_STYLES.items() %}
+            <a href="" onclick="setStyle('{{ style }}'); return false;">[{{ style }}]</a>
             {% endfor %}
         </div>
         {% endif %}