Bug 24033: Fix column labelling on basket summary page (ecost)

Bug 24033: Fix column labelling on basket summary page (ecost)

When viewing a basket, some of the column names are unclear
and are different than the terms used for the same field
on the order form. This patch edits the column titles to
match the order form.

To test:
1) In acquisitions, create a budget.
2) In acquisitions, create a fund.
3) In acquisitions, create a vendor.
4) In acquisitions, create a basket and add a test item to the basket.
5) Observe the column titles ecost tax inc. and ecost tax exc.
   Check the column visibility settings if you don't see
   the columns.
6) Apply the patch.
7) Observe the column titles have been updated.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>