Imio.pm.ws

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- Fixed call to `tool.isManager` and handle `utils.get_current_user_id`.
[gbastien]

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- Fixed `SOAPView._mayAccessAdvancedFunctionnalities`, call
`ToolPloneMeeting.isManager` with `ToolPloneMeeting` instance as first arg,
required now for caching reasons.
[gbastien]

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- Call `ToolPloneMeeting.get_orgs_for_user` with `the_objects=True/False`
when relevant as default value changed in `Products.PloneMeeting`.
[gbastien]

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- In `_meetingsAcceptingItems`, log only one time in the Zope log at the end or
we have the impression that the method was called many times.
[gbastien]

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- Fixed `test_ws_getItemInfosRequest` now that observers may access item since
WF initial state, make sure we use a member that does not have access to item
at all and fixed `test_ws_getConfigInfosItemPositiveDecidedStates`, field
`MeetingConfig.itemPositiveDecidedStates` was removed and is now managed by
`MeetingConfig.getItemPositiveDecidedStates` method.
[gbastien]
- Fixed `getItemInfosRequest/getSingleItemInfosRequest` that was breaking when
no result and `showEmptyValues=0`.
[gbastien]
- Adapted tests and code regarding fact that Meeting was moved from AT to DX
(`linkedMeetingUID` index is renamed to `meeting_uid`, `Meeting.date` attribute
holds a `datetime` instead a `DateTime`, `attendees` related methods use
snake_case instead camelCase on both `Meeting` and `MeetingItem`,
every methods on Meeting use snake_case).
[gbastien]
- Adapted code now that `MeetingItem.getCategory` does only return the real
category and not the `proposingGroup` when category not used.
[gbastien]

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- When adding `wf_transition_triggered_by_application` comment to
`workflow_history`, do not use a `zope.i18nmessageid.message.Message` or
it is stored this way in workflow_history, use a simple string and
it will be translated by `imio.history`.
[gbastien]