Notify of on-going import and status of the import.
Remove activities button for now.
Format the result depending on import output.
Fix layout issue.
Add tooltip to spinning wheel (see #10864)
Handle error than can occur during the scanning.

To test, use Mike.dv
Return the error object if an error occurred.
Fix folder import and notification.
Force a repaint.
Clear toolbar after switch. (see #11025)
Merge pull request #1176 from jburel/import-status-tb-dev-4-4

Import status tb dev 4 4