Update default conf

default_conf.py

@@ -70,3 +70,6 @@ excluded_domain_name = []
 
 # Domains that set no-referer as Referer-Policy
 no_referrer_domains = []
+
+# Domains used by robots
+robot_domains = []

display.py

@@ -207,7 +207,7 @@ class DisplayHTMLBlockTable(DisplayHTMLBlock):
         self.insertCol(column_insertion, self.iwla._('Ratio'), u'iwla_hit')
         for (index, r) in enumerate(self.rows):
             val = r[column] and int(r[column]) or 0
-            self.setCellValue(index, column_insertion, '%.1f%%' % (float(val*100)/float(total)))
+            self.setCellValue(index, column_insertion, '%.1f%%' % (total and float(val*100)/float(total) or 0))
 
     def _filter(self, function, column, args):
         target_col = None