* Update add-http-proxy-option.patch and use-pkexec-to-get-root- rights.patch to support and handle --https-proxy option too. Dropbox now redirects the download URL to an https URL so it might be needed to get the download working in some situations. * Add display-error-string-when-download-failed.patch to provide more information when the download failed. It makes it easier to respond to user support requests.