Imio.actionspanel

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- Use translated transition title in transition confirmation popup
[gbastien]
- Simplified triggertransition view by not using objectUID anymore, we use the context
as the view is called on it, objectUID was legacy and useless
[gbastien]

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- Store transitions to confirm in the registry
[sgeulette]
- Add a small margin-left to the `notTriggerableTransitionImage` class so if several not
triggerable transition actions are displayed, it is not stuck together
[gbastien]
- Rely on imio.history to manage history related section
[gbastien]

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- Removed IObjectWillBeRemovedEvent, either use same event from OFS.interfaces or in case we use
AT, we could need to override manage_beforeDelete as it is called before IObjectWillBeRemovedEvent
in the OFS object removal machinery.
- Do only rely on `mayDelete` method instead of checking `Delete objects` and mayDelete method,
this way, we may handle case where user does not have the `Delete objects` but we want him
to be able to delete an element nevertheless, in this case, the all logic is managed by mayDelete.

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- Sort transitions by transition title, more easy to use when displaying several transitons.
- Corrected bug where the link to trigger a transition that did not need to be confirmed,
did not contain the view name, only parameters. This made the user being redirected to the object
view and not able to trigger the transition from another place.

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- Added submethod _findViewablePlace in _computeBackURL where we can manage
where to redirect the member when he was on the object he just deleted.
This makes it possible to override only the _findViewable method
and keep the other part of _computeBackURL that does manage the case when
the member was not on the object he just deleted.
- Custom action_panels views can now be registered with a different name
than `actions_panel`.

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- Adpated _transitionsToConfirm method to be also able to provide custom
view name to use as confirmation popup.