Bug 6530: Item Due notice label displaying as 'unknown'

Some of the translated sql files still had 'Item_DUE' instead
of 'Item_Due' causing the staff interface to display 'unknown'
instead of the correct description.

To test:
- Do a new installation, using German, French, Polish, Russian or Ukrainian sample files.
- Actived EnhancedMessagingPreferences
- Create a new patron category and check message descriptions display correctly

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>

installer/data/mysql/de-DE/mandatory/sample_notices_message_attributes.sql

@@ -1,7 +1,7 @@
 insert into `message_attributes`
 (`message_attribute_id`, message_name, `takes_days`)
 values
-(1, 'Item_DUE', 0),
+(1, 'Item_Due', 0),
 (2, 'Advance_Notice', 1),
 (4, 'Hold_Filled', 0),
 (5, 'Item_Check_in', 0),

installer/data/mysql/fr-FR/1-Obligatoire/sample_notices_message_attributes.sql

@@ -1,7 +1,7 @@
 insert into `message_attributes`
 (`message_attribute_id`, message_name, `takes_days`)
 values
-(1, 'Item_DUE', 0),
+(1, 'Item_Due', 0),
 (2, 'Advance_Notice', 1),
 (4, 'Hold_Filled', 0),
 (5, 'Item_Check_in', 0),

installer/data/mysql/pl-PL/mandatory/sample_notices_message_attributes.sql

@@ -1,7 +1,7 @@
 insert into `message_attributes`
 (`message_attribute_id`, message_name, `takes_days`)
 values
-(1, 'Item_DUE', 0),
+(1, 'Item_Due', 0),
 (2, 'Advance_Notice', 1),
 (4, 'Hold_Filled', 0),
 (5, 'Item_Check_in', 0),

installer/data/mysql/ru-RU/mandatory/sample_notices_message_attributes.sql

@@ -3,7 +3,7 @@ truncate message_attributes;
 insert into `message_attributes`
 (`message_attribute_id`, message_name, `takes_days`)
 values
-(1, 'Item_DUE',                    0),
+(1, 'Item_Due',                    0),
 (2, 'Advance_Notice',              1),
 (4, 'Hold_Filled',                 0),
 (5, 'Item_Check_in',               0),

installer/data/mysql/uk-UA/mandatory/sample_notices_message_attributes.sql

@@ -3,7 +3,7 @@ truncate message_attributes;
 insert into `message_attributes`
 (`message_attribute_id`, `message_name`, `takes_days`)
 values
-(1, 'Item_DUE'              , 0),
+(1, 'Item_Due'              , 0),
 (2, 'Advance_Notice'        , 1),
 (4, 'Hold_Filled'           , 0),
 (5, 'Item_Check_in'         , 0),