Bug 14955: Don't double encode chars in the "Show more" link

Bug 14955: Don't double encode chars in the "Show more" link

Bug 13789 has fixed this issue for the facet links (select/unselect) but
not for the "Show more" facets link.

This patch reuses the "url" variable, generated for the facets, for
these links. A new "local_url" variable is used to build links for each
entry.

Test plan (for OPAC and intranet):
- Search for a very common term
- Filter the results using facets
- You should get more than 5 entries for a facet and 1 selected:
Author
 author 1
 author 2 [x] # Selected
 author 3
 author 4
 author 5
 Show more # you see this link if there is 5+ values for this facet
- Click on the Show more link
Without this patch, the url contains double-encoded characters and you
will certainly don't get any results
With this patch, you should get results.

Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>