Update for cageUI project

[LeviCameron1]

Rationale

Additional changes brought up by Erika and some bug fixes.

Related Pull Requests

Changes

1. Ability to unmerge racks
2. Add new divider locked modification (one red line)
3. Update room list navigation to show current url position and save during refreshing
4. Bug fix for template rooms preventing connecting cages.
5. Add loading into the room display when switching rooms.
6. Sort room list racks based on their cage numbers
7. Fix room list drop-down so that they can close
8. Update svg fetching to cut back on loading times.
9. Fix room list scroll so that it doesn’t obscure drop-downs