Task description

Prepare the download page with the new information:

• Descriptions and hashes of downloadable files.
• Link to the download and installation instructions for each released target.
• Include the links to the target board page
• Include links to the files to download.
• Include link to the feature page I think this can be marked as done - I've left the previous link below the table as it is

Create a row per target. It is the simplest approach.

The following tasks also needs to be done:

• Erase the previous instructions This tasks is only for the final release.
• Create a new link in the previous release section. The only information in the page should be about the current release This tasks is only for the final release.