Bug 10915: fix About->timeline breakage on incompletely upgraded Koha

This patch supplies a default value for the koha-conf.xml
setting docdir to handle the case where the user neglects
to set it upon upgrade.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Fixes dev and standard installs without docdic tag in koha-conf.xml.
Doesn't break when docdir present either. Warning still present
on packages install that didn't add the docdir definition in koha-conf.xml

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 3ae471a352fa2b00782c29c5c40f39db04fe510a)
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Bug 10915: (QA followup) warn if cannot read history.txt

This patch makes about.pl test if success opening history.txt, and
shows a convenient warning to the end user. No more warnings in the logs
(about.pl: readline() on closed filehandle $file at /usr/share/koha/intranet/cgi-bin/about.pl line 166)
and better problem solving information for the end user.

Sponsored-by: Universidad Nacional de Cordoba
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 45b85a700fcb4c9db07ec0bd13ecd8463696c4c2)
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Update release notes for 3.12.5 release
Translation updates for 3.12.05

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
(cherry picked from commit 64332b6b9be9ab71b22433533d529573a2f5297f)
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Increment version for 3.12.5 release