v4.3.0.stable52

Bug Fixes

• Fix classification required groups cannot be selected in the classification picker
• Fix download file APIs so they don't crash when the file is missing

Improvements

• Allow user to select groups that its not part of in the classification picker
• Add progress status for long running dialog tasks
• Use an Ajax downloader to download files to be able to provide feedback to the user in case of crashes or long server-side rendering before file transfers