Bug 31823: Add page-section to uncertain prices page (acq)

Bug 31823: Add page-section to uncertain prices page (acq)

This patch adds a "page-section" wrapping div to the uncertain prices
page in Acquisitions

Note: This patch contains indentation changes.

To test, apply the patch and go to Acquisitions.

- Locate a vendor and view its details
- In the left-hand sidebar, click "Uncertain prices."
- The page should have two sections: Details about the vendor, and a
  list of orders with uncertain prices.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>