Improve error handling on Workflow_statusModify. If requested transition is not available, then show a nice message.

PasswordTool_viewResetPassword/text_content from erp5_core wrongly requires
Field Library in erp5_web and EmbeddedFile_view/my_description from erp5_base
wrongly requires Field Library in erp5_dms.

If an user has set SVN working copies in its preferences, it cannot be
modified anymore after upgrade.

Now both ascending arrow and descending arrow are displayed in title column
and user can sort in specific order explicitly. User also can sort multiple
columns by click without using sort-on-dialog.

Fix error message of StringAttributeMatch Constraint incorrectly renamed after migration to ZODB (78e2ae32).

92aa42c378783603e90f7ff27208034bdfe5a5e5 reintroduced the random failure. This
restores the same workaround using the 3 item sort syntax

It should prevent a random failure

This way mysql will probably merge this with other constraints on
stock.portal_type when portal_type= is passed.

We were joining catalog for section, node and resource, mainly in order to
expose _title and _relative_url in brains. We just need to select the
corresponding uids and let brains do another catalog search to get the object
when accessed.
Note that erp5_banking_core is not updated

Change the person_view / career_view if ERP5 HR is installed so that a person's career only defines the relation to a position.
Display in position history the list of related person's careers.
Be able to assign a person to a position (in an assignment) like it is possible for a project.

Fix improper form's setting.

Revert "make whole cell in listbox clickable.", because it makes quite difficult to select a text (but still possible...).

This reverts commit ad1b0d2d.