2019-07 report: add stuff I was involved in.

wiki/src/blueprint/monthly_report/report_2019_07.mdwn

@@ -86,7 +86,27 @@ Infrastructure
   key|doc/about/openpgp_keys/signing_key_revocation]] after an external
   review. ([[!tails_ticket 15604]])
 
-- We discussed additions of new people to the mechanism.
+- We discussed additions of new people to the Tails signing key
+  revocation mechanism.
+
+- The new backups system for our entire infrastructure is live.
+  [[!tails_ticket 15071]]
+
+- We upgraded our Puppet master (sic) to Debian 10 (Buster), which
+  supports PuppetDB out of the box. This allowed us to drop a bunch of
+  hackish workarounds and it was a great way to fast-track the
+  onboarding of zen, our new sysadmin. [[!tails_ticket 16460]]
+
+- We made great progress on our [web translation
+  platform](https://translate.tails.boum.org/):
+  - We fixed a number of bugs identified since we submitted the platform
+    to a production workload.
+  - We modified in depth the permissions model to address issues identified
+    by a security review.
+  - We sent a public call for testing.
+  - We kept working on documentation for translators.
+  - We adjusted the resources allocated to the VM that runs this platform
+    and deployed Apache `mod_security` to make it a bit less scary.
 
 Funding
 =======
@@ -104,6 +124,11 @@ Outreach
 Past events
 -----------
 
+- A few Tails contributors attended
+  [DebConf19](https://debconf19.debconf.org/), the annual Debian
+  Developers and Contributors Conference. intrigeri and nodens run
+  a skill-sharing session about AppArmor.
+
 Upcoming events
 ---------------