Fix jwt import check

Timeout reading body for outbound HTTP requests

* speed up room summaries by pulling their data from room_memberships rather than room state
* disable LL for incr syncs, and log incr sync stats  (#3840)

Remove build requirements after building docker image

Send existing room tags down sync on join

Add apache vhost config to Readme

This handy code attempted to check that we could import jwt, but utterly failed
to check it was the right jwt.

Fixes https://github.com/matrix-org/synapse/issues/3793

guest users should not be part of mau total

When a user joined a room any existing tags were not sent down the sync
stream. Ordinarily this isn't a problem because the user needs to be in
the room to have set tags in it, however synapse will sometimes add tags
for a user to a room, e.g. for server notices, which need to come down
sync.

Limit the number of PDUs/EDUs per fedreation transaction

Only start postgres instance for postgres tests on Travis CI

Remove conn_id from repl prometheus metrics

User iter* during sync state calculations

bump dep on pyopenssl to 16.x

Synapse 0.33.3.1 (2018-09-06)
=============================

SECURITY FIXES
--------------

- Fix an issue where event signatures were not always correctly validated ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
- Fix an issue where server_acls could be circumvented for incoming events ([\#3796](https://github.com/matrix-org/synapse/issues/3796))

Internal Changes
----------------

- Unignore synctl in .dockerignore to fix docker builds ([\#3802](https://github.com/matrix-org/synapse/issues/3802))