we should not call getInventoryList if there is no account_type_to_group_by_mirror_section_previous_period

ERP5Site.py: remove workflow tool migration in site setup, because now it will install erp5 workflow tool instead of DCWorkflow tool.

Workflow.py: remove non necessary code in notifyCreated; fix _executeTransition when non transition pass to it as a parameter.

InteractionWorkflow.py: remove duplicated code, function correction according to erp5 workflow structure.

g to erp5 workflow structure.

This reverts commit ea00f588.

Revert "patches/DCWorkflow.py: when generate xml file, verfie the existence of the object, if an object id is bad defined, don't put it in XML."

This reverts commit aac83e25.

patches/DCWorkflow.py: when generate xml file, verfie the existence of the object, if an object id is bad defined, don't put it in XML.

Also fix a problem with title column having a different name in more columns

* sort variations base categories in same order than budget variations
* use same names as budget variations

Workflow.py: do not compare title in showAsXML, because in some case DC workflow's transition/ingeraction or state doesn't has title.

InteractionWorkflow.py: do not compare title in showAsXML, because in some case DC workflow's transition/ingeraction or state doesn't has title.

patches/DCWorkflow.py: do not compare title in showAsXML, because in some case DC workflow's transition/ingeraction or state doesn't has title.

WorkflowTool.py: during the workflow convertion, if DC workflow's transition/interaction or state doesn't have a title, then converted its id as title.