LP#1850547: release notes for Angular Acquisitions Search

LP#1850547: release notes for Angular Acquisitions Search

The general test plan for the feature includes:

- verifying that results are retrieved as expected
- verifying that default searches can be saved and cleared
  and are used to populate the form.
- verifying that the run immediately checkbox works as expected
- verifying that grid result sorting and filtering works
  as expected
- verifying that links to POs, providers, catalog records,
  etc. find their correct targets

Sponsored-by: Evergreen Community Development Initiative
Sponsored-by: Georgia Public Library Service
Sponsored-by: Indiana State Library
Sponsored-by: C/W MARS
Signed-off-by: Galen Charlton <gmc@equinoxinitiative.org>