Plugins management seems ok

plugins/display/top_visitors.py

@@ -17,6 +17,11 @@ def load():
 
 def hook(iwla):
     stats = iwla.getMonthStats()
+
+    if not 'top_visitors' in stats.keys():
+        print 'Top visitors post analysis plugin not installed'
+        return
+
     index = iwla.getDisplayIndex()
     table = DisplayHTMLBlockTable('Top visitors', ['Host', 'Pages', 'Hits', 'Bandwidth', 'Last seen'])
     for super_hit in stats['top_visitors']: