fixed missed renaming of variables

program/templates/boxes/broadcastformat.html

-{% if broadcastformats %}
+{% if broadcastformat_list %}
     <dl id="broadcastformat" class="portlet">
         <dt class="portletHeader"><span>Legende</span></dt>
         {% for bf in broadcastformat_list %}

program/templates/boxes/musicfocus.html

-{% if musicfoci %}
+{% if musicfocus_list %}
     <dl id="filterbox_musicfocus" class="portlet filterbox">
         <dt class="portletHeader"><span>Musiktendenz<span></dt>
         <dd class="portletItem">

program/templates/boxes/showinformation.html

-{% if showinformations %}
+{% if showinformation_list %}
     <dl id="filterbox_showinformation" class="portlet filterbox">
         <dt class="portletHeader"><span>Sendungsinfo<span></dt>
         <dd class="portletItem">

program/templates/boxes/showtopic.html

-{% if showtopics %}
+{% if showtopic_list %}
     <dl id="filterbox_showtopic" class="portlet filterbox">
         <dt class="portletHeader"><span>Thema / Schwerpunkt<span></dt>
         <dd class="portletItem">