wiki/src/partners.ar.po: updating as wiki/src/partners.de.po has changed.
wiki/src/partners.ca.po: updating as wiki/src/partners.de.po has changed.
wiki/src/partners.id.po: updating as wiki/src/partners.de.po has changed.
wiki/src/partners.pl.po: updating as wiki/src/partners.de.po has changed.
wiki/src/partners.ru.po: updating as wiki/src/partners.de.po has changed.
wiki/src/partners.sr_Latn.po: updating as wiki/src/partners.de.po has changed.
wiki/src/partners.tr.po: updating as wiki/src/partners.de.po has changed.
wiki/src/partners.zh.po: updating as wiki/src/partners.de.po has changed.
wiki/src/partners.zh_TW.po: updating as wiki/src/partners.de.po has changed.

Since we pointed to a wrong URL for them during 1 year (exactly!) I
propose to keep the fixed link for some more months.

That is:

 - Drop packages we don't patch anymore.
 - For the remaining ones: update reference version.
 - In the rest of the doc: s/stretch/buster/

Given how we do it these days, i.e. patching Thunderbird at build time, if our
patchset needs to be updated, we'll have seen FTBFS earlier, and that's covered
by the "the jobs for the release branch have good enough results" sanity check.

We're now using the one from sid for Buster images.

Fix-committed: #16692

Currently translated at 96.1% (74 of 77 strings)

Currently translated at 93.5% (72 of 77 strings)

Wow, we're already in 2019 :)

Otherwise, the links to these drafts on blueprint/monthly_report
just shows a bunch of "Tails report for MONTH, YEAR", which is
not terribly helpful :)

See #17013.

Merge branch 'bugfix/12092-kill-gdm-session-after-login-squashed' into devel (Fix-committed: #12092)

I.e. integrate as code comments all the relevant explanations
that were in commit messages, in the previous non-squashed branch
for refs: #12092.

This fixes a race condition¹ that sometimes causes Spice file transfers to not
be available; I've seen this problem happen in the Journal saved by some test
suite runs.

Here, we apply the upstream fix² which was included in the spice-vdagent 0.19.0
release. Once we start building Tails based on Buster, this patch will fail to
apply, because the changes it brings are already applied, which will hint us
that we can remove it.

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1623947
[2] https://lists.freedesktop.org/archives/spice-devel/2018-September/045511.html

In case the branch for #12092 introduces regressions, we'll need debug logs to
understand when/why GDM switches VTs or $DISPLAY, and when it activates its own
logind session.

This will be reverted in refs: #17011.