[SE-1695] ADH - Introduce a special ‘@BlockOutput’ Output Pattern field
Product Line:	P&C
Component/s:	Other
Fix Version/s:	SICS 4.9.3 SICS 4.9.2 SSP3

Aim of function
Introduce a special '@BlockOutput' Output Pattern field.
At the time the output message is about to be generated, SICS will check @BlockOutput and block the output message if the value is 'true'.
This is particularly useful for blocking generation of eMessages with no technical items.

System Parameters Affected
None.

Existing functionality affected
Automated Document Handling.