erp5_workflow: remove an unused ERP5 form; correct the name of views according to the Naming Convention Test results.

erp5_workflow: add Interaction and InteractionWorkflow Property sheets here; the other workflowrelated property sheets can be found in bt/erp5_property_sheets.

erp5_workflow_test_data: revert the addition of suffix in live test isTransitionPossible due to the deployment of a new universal reference getter.