Co-Authored-By: Brendan Abolivier <babolivier@matrix.org>
Co-Authored-By: Erik Johnston <erik@matrix.org>

... to stop people causing DoSes with malicious web pages

another typo

fix typo

Make room directory search case insensitive

Make sure that we check that events sent over /send_join, /send_leave, and
/invite, are correctly signed and come from the expected servers.

Remove repeated calls to config.stats_enabled.

Fix /keys/query API on workers.

The necessary getters were added only to the master store and not the
worker stores.

Turns out that fetching variables from the config object is expensive,
so doing it once at startup avoids unnecessary work.

Move schema delta files to the correct data store.

Add new boolean column to synapse_port_db

They were put in the global schema delta directory due to a bad merge.

The expected use case is to suppress MAU limiting on small instances

Fix import paths in synapse_port_db

Make `synapse_port_db` correctly create indexes in the PostgreSQL database, by having it run the background updates on the database before migrating the data.

To ensure we're migrating the right data, also block the port if the SQLite3 database still has pending or ongoing background updates.

Fixes #4877 

Add a linting script that enforces all boolean values in the default config be lowercase.

This has annoyed me for a while so I decided to fix it.

Refactor storage layer to support multiple databases