text: Title: Multi-file upload: All files are uploaded to same folder (subfolders are not created)
  Body: As the title says, when using multi-file upload functionality, all the uploaded files are uploaded into same folder. The uploader does not create subfolders.
  
  - Affected dash-uploader version: 0.7.0dev 279ee87
  
  ### Todo
  - [ ] Check if this can be fixed on Chrome
  - [ ] Check if this can be fixed on other browsers
      - [ ] If not, check if an alert could be shown to users with unsupported browsers
  
  