the possibility to grant a person the right to edit/manage all publications of a project.

[whomingbird]

User case:
A new member joins the project. he is delegated to edit/manage all publications in his project.

Currently in SEEK, only the person who registered the publication or the publication authors can edit/manage publications.
So we need to add the possibility for a special role (e.g a project admin) in SEEK, to grant a person the right to edit/manage all publications of a project.

Firstly, adding a rake task running in the backend would be sufficient; in the long term we could consider to add it in UI.