Bug 29418: (follow-up) Fix links generated in XSLTs

Bug 29418: (follow-up) Fix links generated in XSLTs

This patch addresses the case of links that are generated on the XSLT
side, those linking to host records using 773$t and 773$a.

To test:
1. Repeat the test plan from the other patches
2. When sitting on the detail view of the host record, click on the link
   to open the child.
=> SUCCESS: The link works, because of the previous patches
3. Click on the 'In:' link so the search takes you to the host record
=> FAIL: The link leads no results
4. Apply this patch
5. Restart all
6. Reload the child record page and click on the link
=> SUCCESS: Voila! The host record is retrieved!
7. Bonus points: Retry the full test plan, but add a " or ? to the
   author in both host and child records
=> SUCCESS: Things don't work before this patch, and work afterwards.
8. Sign off :-D

Sponsored-by: Theke Solutions
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>