Adding new activiy log module.
Listen:
 - Gc\User\Model::after.save
 - Gc\User\Model::after.delete
 - Gc\User\Model::after.auth
 - Gc\User\Model::after.auth.failed
 - Gc\Datatype\Model::after.save
 - Gc\Datatype\Model::after.delete
 - Gc\Document\Model::after.save
 - Gc\Document\Model::after.delete
 - Gc\DocumentType\Model::after.save
 - Gc\DocumentType\Model::after.delete
 - Gc\View\Model::after.save
 - Gc\View\Model::after.delete
 - Gc\Script\Model::after.save
 - Gc\Script\Model::after.delete
 - Gc\Layout\Model::after.save
 - Gc\Layout\Model::after.delete