Add paper presentation confirmation

Change-Id: I31b8cc168800d0bae889a2d7cbe7d21116828594
diff --git a/create_user_table.sql b/create_user_table.sql
index 480b623..d5abe47 100644
--- a/create_user_table.sql
+++ b/create_user_table.sql
@@ -33,5 +33,6 @@
     invoice_reference varchar(32) not null default '',
     paid boolean not null default false,
     paid_when date,
+    presentation_confirmed boolean not null default false,
   primary key (`id`)
 ) engine=innodb AUTO_INCREMENT=100;