Fixes #850

Cf. https://forum.orekit.org/t/expired-ssl-certificate/1386/16

Fix issue #842

Closes #842

See merge request orekit/orekit!203

Cf. https://forum.orekit.org/t/expired-ssl-certificate/1386/16

Thanks to Sofia Urbina for the translation!

Fixes #838

Thank you to Kendra Hale.

Fixed #844

Fixes #845

Fixes #846

Thanks to Sofia Urbina for the translation!

Thanks to Lucian Bărbulescu for the translation!