Fixed: tests screen name dsl. Added: :empty_trash
Imported: test helpers from nodejs.
Imported: Customer tests from nodejs
Refactored: default errors
Moved exception tests into Ok tests.
Ok added as a model to test.
Added: tests for Ok .new
Updated/imported: tests for Customer
Added: assert :zero, assert_not :zero
Various fixes for Customer create
Fixed: tests for screen name validation during Customer create
Fixed: :owner_id gets updated during Screen_Name create
Fixed: clean id of customer is updated during first sn create