Feat/add org icon

[mavarius]

Unblocks: #6215

Changes

Add Organization Chart Icon

Screenshots

Checklist

Check all that apply

• [x] Updated documentation to reflect changes
• [x] Added entry to top of Changelog with link to PR (not issue)
• [x] Tests pass
• [x] Peer reviewed and approved

[wdoconnell]

Before merging - could you remove the "Closes issue"? That's the issue I've designated for adding the implementation of this icon in the UI.