Use symlink in main package page
There are two pages on the website containing release packages:
https://www.orfeo-toolbox.org/packages/: packages corresponding to the current release
https://www.orfeo-toolbox.org/packages/archives/OTB/: all otb packages.
Packages for the current release are duplicated on two different pages. We could simplify it by creating symlinks from the main package page to the archive page.