the only way to escape the 'while 1' loop was depending on changes on the state
variable, which was, before this fix, using the invariant tdef instead of
transition

a few useless methods

in order to remove hardcoded 'transition_' or 'script_'

this file has already been moved to erp5_core

with old DCWorkflow, portal_workflow could contain the chain_dict for portal_type/workflow
association

this is a wrapper for the PythonScript __call__ method
It should fix testSecurity

This fixes testListboxToolBarDelete failure in testFunctionalKM

keep it as compatibility code but also search for new workflow/portal_type association
directly in portal_type (type_workflow_list)
This fixes some failures in testFunctionalCore

if using id, it would check for simulation state to be for example in state_draft (id)
instead of draft (reference)
This was breaking testFunctionalCore page_templates_zuite/testSearchDialog

testERP5Catalog was failing because there was more than 1000 activities in portal_activities
and the one that should have been invoked was at the end of the list
set the limit to None, and only check the interesting activities
Also, add SQLCatalog_deferFullTextIndexActivity to activities to
play.

this test is no more relevant because chain_dict is not used anymore
and portal type/workflow association is done in portal types directly

don't try to remove non-existing worklists!
+ use getPortalType instead of __class__.__name__
+ only test guard on ERP5Worklow worklists

that are not used anymore (workflow are associated
to portal_types in portal_types directly)

non-existing getWorklistValueDict one
+ add getGuardRoleList method on DCWorkflow worklists

setVariableValue sets value to None if parameter is empty string
this breaks testWorkflowAndDCWorkflow and change the expected behaviour
take care that if someone saves a variable without editing this field, variable_value
may be None again