Comment 3 for bug 1793196

With Dan Wells's help, here's a signoff branch with one new commit to fix another console error (in the combo box directive itself):

https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/rsteed/lp1793196-vol-edit-marc-cn

Also, we found a problem with how the dropdown handles filtering of choices as you type. I'll open a new bug for that.