[IMP] mrp: lock/unlock mode and show final lot

We apply a lock/unlock mode for the mo as was done for the picking.
In locked mode, the user can do all the regular things, but not change
the quantities done given by the work order or produce wizard.
In unlocked mode, only allowed by the mrp manager, the user can change
those quantities.

We opted to remove the 4 lines and just use a check box to indicate
there are lots behind a line.

For the finished products tab, we opted to show the move lines instead
of the moves as this way, you don't need to click further.  If nothing
has been produced yet, a message indicates to produce something first.