Update copyright header with the 2024 upper year. Remove any information about the iZPack installer and test Docker image of Silverpeas. Keep the page about the iZPack installer but this one isn't more referenced by others pages. Anyway, in case this page is accessed, add a warning about the deprecation of the installer.
Update the XML schema component.xsd (defining a Silverpeas Component) according to the change done for the feature #13608. Now, l10n data don't require to be defined into the XML descriptor of a Silverpeas Component. They can be defined within resource bundles accompanying the XML descriptor.