Remove seconds from date display

app/helpers/application_helper.rb

@@ -205,7 +205,7 @@ module ApplicationHelper
   end
 
   def display_date_time(object)
-    object.strftime("%Y-%m-%d %H:%M:%S")
+    object.strftime("%Y-%m-%d %H:%M")
   end
 
   def display_date(object)