[chronojump-server] Fixed the problem in stations list template when there are not stations

[Marcos Venteo Garcia <mventeo src gnome org>]

commit 28503ad1e357f336e850c9ec86b0132c449a6a5b
Author: Marcos Venteo <mventeo gmail com>
Date:   Mon Jun 26 00:45:01 2017 +0200

    Fixed the problem in stations list template when there are not stations

 chronojumpserver/templates/station_list.html |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/chronojumpserver/templates/station_list.html b/chronojumpserver/templates/station_list.html
index 9b6afb6..8defb85 100644
--- a/chronojumpserver/templates/station_list.html
+++ b/chronojumpserver/templates/station_list.html
@@ -21,6 +21,7 @@
 
     </div>
     <div class="col-sm-8">
+        {% if stations|length > 0 %}
         <div class="panel panel-default">
             <div class="panel-heading">
                 <h2 class="panel-title">Detall de l'Estació <span 
id="stationName">{{stations[0].name}}</span></h2>
@@ -47,6 +48,7 @@
             <table id="exercises" class="table table-hovered">
                </table>
         </div>
+        {% endif %}
     </div>
 </div>
 {% endblock %}