XWIKI-9665: FAQ Search page should be in the FAQ space
* Note that one idea would have been to remove the FAQCode space and move all technical pages to the FAQ space but it has several drawbacks:
** We would have needed to write a migrator to migrate existing FAQs (to move from FAQCode.FAQClass to FAQ.FAQClass)
** The FAQ search currently searches in the FAQ space and thus it would have increased the risk of getting result for non FAQ pages (although this risk is reduced by the fact that the pages currently in the FAQCode space are hidden)
 ** It would have be more difficult for a user to remove all its FAQ pages should he need to do that. This could be solved by an Admin UI for the FAQ app to remove all FAQ pages.
 ** It reduces the namespace for creating new FAQ entry names (since it could class with technical page names)