Bug 23294: Show actual price when ordering

Bug 23294: Show actual price when ordering

To test:
1 - Have a basket
2 - Add an order
3 - Modify the order, note you cannot see the unitprice/Actual cost
4 - Apply patch
5 - Note it is there
6 - Add to IntranetUserCSS:
    .ordering_unitprice{ display:none; }
7 - Reload
8 - Note it is hidden

Signed-off-by: Maryse Simard <maryse.simard@inlibro.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit d2e85ac9949ba6ccbe7470ae2caf446c05e0b941)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>