Hints for remmina in community

Warnings

• screenshot-download-error
  Error while downloading screenshot from 'https://www.remmina.org/images/appdata/protocol-rdp.png': Failed to download file: SSL certificate problem: certificate has expired
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from 'https://www.remmina.org/images/appdata/protocol-vnc.png': Failed to download file: SSL certificate problem: certificate has expired
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from 'https://www.remmina.org/images/appdata/protocol-ssh.png': Failed to download file: SSL certificate problem: certificate has expired
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from 'https://www.remmina.org/images/appdata/protocol-sftp.png': Failed to download file: SSL certificate problem: certificate has expired
  This might be a temporary server issue, or the screenshot is no longer available.