ID#183: migrated APF\core namespace to APF 2.2.
ID#183: migrated APF\tools namespace to APF 2.2.
ID#183: migrated APF\modules namespace to APF 2.2 (part I).
ID#183: migrated APF\modules namespace to APF 2.2 (part II).
ID#183: migrated APF\extensions namespace to APF 2.2.