1.0.0.0

Author Contributor Editor 1.0.0.0

Restores the author's ability to edit the contributor list of their own
submissions in OJS 3.5, honouring the user group's canChangeMetadata flag.

The OJS 3.5 author-side workflow builds the Contributors panel without the
canEdit property, so the panel is always read-only for authors even though the
REST API still authorises the change. The plugin wraps the workflow store's
getPrimaryItems through pkp.registry.storeExtendFn and fills the missing
property in with the permission core already computed, only when it is absent.