Bug 31106: Fix links generated in XSLTs

Bug 31106: Fix links generated in XSLTs

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

To test:
1. Pick a bibliographic record (I chose 'Unconditional' from the sample
   data
2. Add " and ? to the title statement. I changed it to
   'Uncond"itional?¿'
3. Add a child record to it
4. Open the detail page for the host record
=> FAIL: It doesn't show the 'Show analytics' link
5. Repeat 4 for the same record, in the OPAC
=> FAIL: It doesn't show the 'Show analytics' link
6. Apply this patch
7. Repeat 4 and 5.
=> SUCCESS: Links are shown!
8. Follow the links
=> SUCCESS: The links take you to the right resultset!
9. Go to the child record, and notice the link back to the parent works
   :-D
10. Sign off :-D

Sponsored-by: Theke Solutions
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>