Small change to Picard Version 2.3.2 when adding files

Tags: #<Tag:0x00007f4d55e0d4f0>

When adding files to use the Status Label shows “Adding xxx files from…”, however the status label remains even after the files have finished loading.
This can be confusing as it is unclear if the files are still loading or if loading is complete.

Would it be possible to blank out the label when loading is complete or perhaps updating it to show
“xxx Files added from…”?

I created PICARD-1830 to track this issue.