Small fix to synapse_port_db to be able to convert from database schema v56.

* Fix presence timeouts when synchrotron restarts.

Handling timeouts would fail if there was an external process that had
timed out, e.g. a synchrotron restarting. This was due to a couple of
variable name typoes.

Fixes #3715.

This is part of 1.4.1

Synapse 1.4.1rc1 (2019-10-17)
=============================

Bugfixes
--------

- Fix bug where redacted events were sometimes incorrectly censored in the database, breaking APIs that attempted to fetch such events. ([\#6185](https://github.com/matrix-org/synapse/issues/6185), [5b0e9948](https://github.com/matrix-org/synapse/commit/5b0e9948eaae801643e594b5abc8ee4b10bd194e))

Fix inserting bytes as text in `censor_redactions`

make storage layer in charge of interpreting the device key data

make version optional in body of e2e backup version update

Trace non-JSON APIs, /media, /key etc

Now, the CAS server can return an attribute stating what's the desired displayname, instead of using the username directly.

Use Postgres ANY for selecting many values.

Disable bytes usage with postgres

Fix python packaging

... after it got borked by #6081

Add more log context checks when patching inlineCallbacks

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

This means that we can write queries with `col = ANY(?)`, which helps
postgres.

Fixes vector-im/riot-web#5645

This fixed the weirdness of 400 vs 404 as http status code in the case
the filter id is not known by the server.
As e.g. matrix-js-sdk expects 404 to catch this situation this leads
to unwanted behaviour.