ERP5Site.py: the Workflow Tool installation has been move to the bootstrap to allow migrating automatically.

ERP5WorkflowTool.py: add bootstrap function to migrate the workflow tool conditionally-autoomatically.

ERP5Site.py: fix the id problem of migration; migrate Workflow Tool for fresh installation of instance.

erp5_workflow: add a new workflow flow type Configuration Workflow and its' sub-object Configuration State, Configuration Transition.

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.