[FIX] stock: lock/unlock show details view

It is not possible to work directly on the operation tab
when the detailed operation tab is available. On detailed
operations page it is now impossible to add a new move line
when the picking is done and locked.

This commit add some condition in the view and add a check
in the move line creation. If the move line has a picking but
no move then we create it (mark as done directly)