[charts] Fix only seeing first top media instance

vrobbler/apps/charts/templatetags/chart_tags.py

@@ -7,7 +7,10 @@ register = template.Library()
 def get_item(dictionary, key):
     if isinstance(dictionary, dict):
         return dictionary.get(key)
-    return None
+    try:
+        return dictionary[int(key)]
+    except (IndexError, KeyError, TypeError, ValueError):
+        return None
 
 
 @register.filter