Allocate guest user IDs numericcally

The current random IDs are ugly and confusing when presented in UIs.
This makes them prettier and easier to read.

Also, disable non-automated registration of numeric IDs so that we don't
need to worry so much about people carving out our automated address
space and us needing to keep retrying ID registration.

The current random IDs are ugly and confusing when presented in UIs.
This makes them prettier and easier to read.

Also, disable non-automated registration of numeric IDs so that we don't
need to worry so much about people carving out our automated address
space and us needing to keep retrying ID registration.

Host /media/r0 as well as /media/v1

Error if macaroon key is missing from config

Currently we store all access tokens in the DB, and fall back to that
check if we can't validate the macaroon, so our fallback works here, but
for guests, their macaroons don't get persisted, so we don't get to
find them in the database. Each restart, we generate a new ephemeral
key, so guests lose access after each server restart.

I tried to fix up the config stuff to be less insane, but gave up, so
instead I bolt on yet another piece of custom one-off insanity.

Also, add some basic tests for config generation and loading.

Currently we store all access tokens in the DB, and fall back to that
check if we can't validate the macaroon, so our fallback works here, but
for guests, their macaroons don't get persisted, so we don't get to
find them in the database. Each restart, we generate a new ephemeral
key, so guests lose access after each server restart.

I tried to fix up the config stuff to be less insane, but gave up, so
instead I bolt on yet another piece of custom one-off insanity.

Also, add some basic tests for config generation and loading.

Omit keys rather then returning null in profile API

Allowing tagging log contexts

Change event_push_actions_rm_tokens schema

Rename config field to reflect yaml name

Change the way we do public room list fetching

Log more diagnostics for unrecognised access tokens

Fix flake8 warnings for new flake8

Fetch events in a separate transaction.

This has a couple of benefits:

- It reduces the time of transactions, allowing other database requests
  to run.
- Fetching events is given a dedicated database thread, and so can't
  starve other database requests.

Move /sync state calculations from rest to handler

Pass make_guest when we autogen a user ID