Comment 1 for bug 1837260

Mostly done here, w/ sandbox example, but I still need to provide some indication when a save operation has completed (toast, etc.) since we no longer have the closing of the dialog as an indicator.

https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/berick/lp1837260-fm-editor-inline