Workflow.py: when workflow managed role list is not defined, return an empty tuple to variable_match instead of None.

erp5_core: change the validation_workflow's script id checkConsistency to Document_checkConsistency.

erp5_workflow: in interaction workflow's interaction list, show all trigger methods; in interaction view, show trigger method id list.

Worklist.py: getVarMatchedKey won't add key portal_type server times now; getVarMatched retruns matche values for one key each time.

erp5_workflow: add list field to show transition variable in interaction view, which should have been there.

erp5_workflow: add Embedded File as allowed and hidden content type to Configuration Workflow, because it should have been.

Worklist.py: causality state getter returns an empty string instead of None when it is not definded.