Add /room/{id}/event/{id} to synapse

Do bcrypt hashing in a background thread

Fix publicised groups GET API (singular) over federation

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

which was missing its fed client API, since there is no other API
it might as well reuse the bulk one and unwrap it

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

Update http request metrics before calling servlet

Make sure that we set the servlet name in the metrics object *before* calling
the servlet, in case the servlet throws an exception.

Remove dead code related to default thumbnails

Turns out that there is a valid usecase for retrieving event by id (notably
having received a push), but event ids should be scoped to room, so /event/{id}
is wrong.

Fix flaky test_rooms UTs

Fix broken config UTs

Make indentation of generated log config consistent

pointless function is pointless

Fix flakiness in the UTs caused by the user_directory being updated in the
background

https://github.com/matrix-org/synapse/pull/2755 broke log-config generation,
which in turn broke the unit tests.

(we had a mix of 2- and 4-space indents)

Fix templating error with unban permission message

Fixes https://github.com/matrix-org/synapse/issues/2759



Signed-off-by: Travis Ralston <travpc@gmail.com>

Remove 'verbosity'/'log_file' from generated cfg