Bug 12211: fix wrong home link in bootstrap public catalog login page

In bootstrap opac-auth.tt, the link to "Home" in breadcrumbs leads
to #, it should lead to opac-main.pl like in all other pages.

Test plan :
 - Use boostrap opac theme
 - Go to cgi-bin/koha/opac-user.pl when not logged
=> without patch, clicking on Home does not change the page
=> with patch, clicking on Home leads to opac-main.pl

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Link ok, no errors.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works as described.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit c5de0df104c65289a04d7d16f5b56daa7667b13b)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>