As a user performing a bulk-upload of concepts, I need to see a progress bar and confirmation of successful (or unsuccessful/incomplete) upload.
- Progress bar vanishing after ~20 seconds
- No confirmation toast/message shown after upload
- User goes to check on concepts - looks like not all concepts were uploaded. Then 8-10 mins later, all concepts are in fact there.
- Progress bar persists throughout upload
- There is a clear success (or "incomplete upload" or "failed upload") message after the concept upload has completed