Merge branch 'master' into noi

requirements.txt

@@ -1,7 +1,7 @@
 # We are currently targeting the versions shipped in Ubuntu 20.04.
 
 tornado>=4.5,<4.6  # http://www.tornadoweb.org/en/stable/releases.html
-psycopg2>=2.8,<2.9  # http://initd.org/psycopg/articles/tag/release/
+psycopg2==2.9.10  # http://initd.org/psycopg/articles/tag/release/
 sqlalchemy>=1.3,<1.4  # http://docs.sqlalchemy.org/en/latest/changelog/index.html
 netifaces>=0.10,<0.11  # https://bitbucket.org/al45tair/netifaces/src/
 pycryptodomex>=3.6,<3.7  # https://github.com/Legrandin/pycryptodome/blob/master/Changelog.rst