Bug 27613: Change pipe seperated online resource links to psuedo elements

Bug 27613: Change pipe seperated online resource links to psuedo elements

To test:
1. Have a record with many 856 links
2. Look at the links on both the results and detail pages.
3. Look at the '|' and notice it is outside any HTML element, making it
   hard to remove.
4. Apply the patch and regenerate the CSS
5. Look at both the pages again and notice that the '|' is now a psuedo
   element.
6. It should look identical to the way it did without the patch
7. Switch the system pref OPACURLOpenInNewWindow to 'do' and make sure
   the the links look and function right still.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>