ID#234: enhanced the Response implementation to support sending the response directly within front controller actions.
ID#234: migrated convenience methods from HeaderManager.
Migrated to APF 3.0 front controller input parameter scheme.
ID#234: added migration script to remove HeaderManager.
ID#234: removed HeaderManager for APF\modules namespace.
ID#234: removed HeaderManager for APF\modules namespace (manual migration).
ID#234: finished migration script to remove HeaderManager.
ID#234: removed HeaderManager for APF\extensions namespace.
ID#234: removed HeaderManager for APF\tools namespace.