the following issues are considered to be resolved in order to fulfill the implementation of UI to access workspace data:

• the file picker library needs some modification in order to meet our needs to access workspace files.
• the communication between the UI and workspace manager has authentication issue
• each workspace request (ws_list, ws_upload, ws_download) sent from UI is routed differently from firefly server to workspace server manager.
• the request parameters for some workspace command need to be redefined.

Some pending issues for FilePicker styling

• files are shown in very blue link-like style. i can imagine it'll be distracting when there are more files
• selected file/folder is bold, may causing wrapping.
• the 3 added icons: file, folder-open, folder-close
  they are slightly blurred on the edges. file is colored while folers are b/w.-

some functional issues,

• chart save
  not added. may not be part of this ticket. but, feature should be added.

catalog upload

• uploaded table from workspace show 'Table Upload' as title. It should show workspace file name.
  this is not part of the ticket, but a new ticket should be raised to address this.

FITS file upload

• same as catalog upload. Title should show workspace file name.

• sync the workspace content between the server and UI. There is no implementation to notify the front end that any change made in the workspace side.
• add other workspace management functions to FilePicker, such as delete folder, move folder, rename folder, etc.
• use Modal dialog to show workspace access error message or ask should_overwrite options in case the download file name already exists.