Tracking events on the final download on the download page

In the final download screen. For example:

http://www.xwiki.org/xwiki/bin/view/Download/DownloadForm?downloadURL=http://download.forge.ow2.org/xwiki/xwiki-enterprise-installer-generic-8.3-standard.jar&projectVersion=8.3

We don't know how many people:

• click on download
• click on skip
• do not continue

since it directly leads to the ow2 file.
We would need to add a JS event like on the try page in the JSX

http://www.xwiki.org/xwiki/bin/edit/Hosted/WebHome?editor=object