Comment 1 for bug 2040319

Here's a branch: https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/sleary/lp2040319-acq-dropdowns-click-to-open

This also fixes a typo in the page title ("Linetiems").

To test:

1. If you don't have any selection lists, go to /eg2/en-US/staff/acq/search/selectionlists and create one.
2. Visit /eg2/en-US/staff/acq/related/227 (or any other record ID number)
3. Click the Add to Selection List button under the record summary
4. When the selection list entry box appears, you should be able to click it and see all your selection lists.
5. Click the Add to Purchase Order button, also under the record summary
6. When the purchase order entry box appears, click it and see if a list of POs is shown