Merge pull request #2926 from matrix-org/erikj/member_handler_move

synapse/handlers/__init__.py

synapse/handlers/_base.py

synapse/handlers/federation.py

synapse/handlers/profile.py

synapse/handlers/room.py

synapse/handlers/room_member.py

synapse/rest/client/v1/admin.py

synapse/rest/client/v1/room.py

synapse/rest/client/v2_alpha/register.py

synapse/server.py

tests/rest/client/v1/test_typing.py