Add import history to sidebar

What does this MR do and why?

Adds Import history to Your work sidebar

Screenshots or screen recordings

	Before	After
Project import history
Group import history

How to set up and validate locally

Visit import history pages

• http://127.0.0.1:3000/import/history
• http://127.0.0.1:3000/import/bulk_imports/history

Links

• ✂️ UX Paper Cuts 17.9 → Import and Integrate (#499697 - closed)