* remove 2.7 from CI and publishing

* fill out classifiers and also make it not be installed on 3.5

* some minor bumps so that the old deps work on python 3.5

Change password reset links to /_matrix.

Add FAQ questions to federate.md. Add a health warning making it clear that the 1711 upgrade FAQ is now out of date.

Moves the warning about password resets being disabled to the point where a user actually tries to reset their password. Is this an appropriate place for it to happen?

Also removed the disabling of msisdn password resets when you don't have an email config, as that just doesn't make sense.

Also change the error a user receives upon disabled passwords to specify that only email-based password reset is disabled.

* add monthly active users to phonehome stats

Fix bug sending federation transactions with lots of EDUs

Share an SSL context object between SSL connections

Co-Authored-By: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>

If we try and send a transaction with lots of EDUs and we run out of
space, we call get_new_device_msgs_for_remote with a limit of 0, which
then failed.

Add some tests for bad certificates for federation and .well-known connections

turns out we need a shiny version of service_identity to enforce this
correctly.

Fix key verification when key stored with null valid_until_ms

Some keys are stored in the synapse database with a null valid_until_ms
which caused an exception to be thrown when using that key. We fix this
by treating nulls as zeroes, i.e. they keys will match verification
requests with a minimum_valid_until_ms of zero (i.e. don't validate ts)
but will not match requests with a non-zero minimum_valid_until_ms.

Fixes #5391.

Add --no-daemonize option to synctl

Add account_validity's email_sent column to the list of boolean columns in synapse_port_db

- Add parser argument "--no-daemonize"

Signed-off-by: sohamg <sohamg2@gmail.com>

Don't check whether the user's account is expired on /send_mail requests