Current behavior: 
When importing files from online repository, it's possible to select the checkbox next to the current path and select all files in that folder. However, it's not possible to select all folders and all subfolders

Available workaround:
Manually open each folder and select its files to import

Requested behavior:
Enable a checkbox to select the content of all folders/subfolders when importing to online repository

Use case:
This would make it possible to quickly select all files in one go.