Some extensions pages got wrongly updated every day

We noticed that some pages received xobjects update every day, probably during the execution of the Batch importer scheduler. The problem is that those updates don't really make sense here as there was no new releases. Also it leads to having a big amount of versions in the history, and to receive a lots of notification (which is how we identified this)

We found the issue on two pages so far:

• https://extensions.xwiki.org/xwiki/bin/view/Extension/URL%20API#History
• https://extensions.xwiki.org/xwiki/bin/view/Extension/Solr%20Search%20API#History