Use Live Data instead of LiveTable

The application still lists its data with the deprecated LiveTable macro:

• ReleaseNotes.Code.HomeReleaseNotes - the release notes list on the application home page
• ReleaseNotes.Code.HomeReleaseChanges - the changes list

LiveTable has been superseded by Live Data, and now that the application requires XWiki 17.10 (see RN-74) Live Data is available on every supported version.

Moving to Live Data would:

• stop depending on a deprecated component
• let us drop the xwiki-platform-livetable-ui runtime dependency from application-releasenotes-ui
• bring the standard Live Data features (layouts, filtering, sorting, pagination) to both lists

The translation keys releasenotes.releases.livetable.* and releasenotes.changes.livetable.* in ReleaseNotes.Code.Translations will need to be renamed accordingly.