Overlayed actions on heldpositions in person view

[sgeulette]

Actually the view of a person lists the contained held positions.
On each held position, there are several actions icons (view, edit, delete).
The target actions views are displayed in overlay.
I think the overlay is not necessary because main information is already displayed.
I will remove the overlay and I can add a configuration option if someone want the overlay back.

[sgeulette]

committed ec590eb