Comment 1 for bug 1840050

Code pushed:

https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/berick/lp1840050-org-unit-admin

Includes several commits to cover a variety of related improvements. The most notable is some reorganization and modularization of existing components and services to simplify some imports and reduce the number of components/services that must be loaded on the initial staff splash page.