Missing friendly GUI message when local storage is full

[petaflot]

When the local (such as home directory partition) is full, the GUI does not notify the user that the download has failed ; instead, there is a not-too-obvious message in the console (if started from the console... otherwise the message is lost) :

cannot open file "/home/foo/20210725_120058.mp4"

suggestion:

• check for required hard disk space before attempting to download a file
• in the GUI, deselect a file once it has been successfully downloaded
• in the download progress dialog, add a checkbox to auto-delete a file from android storage once (and only if!) it has been successfully downloaded
• in the shell, use a red color for the error messages