SYN-103: Ignore the 'origin' key in received EDUs. Instead take the origin from the transaction itself

Add a keyword argument to get_json to avoid retrying on DNS failures. Rather than passing MatrixHttpClient.RETRY_DNS_LOOKUP_FAILURES as a fake query string parameter

Have all unit tests import from our own subclass of trial's unittest TestCase; set up logging in ONE PLACE ONLY

fix the copyright holder from matrix.org to OpenMarket Ltd, as matrix.org hasn't been incorporated in time for launch.

change the world: make the default matrix API URL prefix /_matrix rather than /matrix to make it easier for existing websites to mount a HS in their namespace without collisions.

perl -pi -e 's#/matrix#/_matrix#g' ./cmdclient/console.py ./docs/client-server/howto.rst ./docs/client-server/specification.rst ./docs/client-server/swagger_matrix/directory ./docs/client-server/swagger_matrix/events ./docs/client-server/swagger_matrix/login ./docs/client-server/swagger_matrix/presence ./docs/client-server/swagger_matrix/profile ./docs/client-server/swagger_matrix/registration ./docs/client-server/swagger_matrix/rooms ./docs/server-server/specification.rst ./graph/graph.py ./jsfiddles/create_room_send_msg/demo.js ./jsfiddles/event_stream/demo.js ./jsfiddles/example_app/demo.js ./jsfiddles/register_login/demo.js ./jsfiddles/room_memberships/demo.js ./synapse/api/urls.py ./tests/federation/test_federation.py ./tests/handlers/test_presence.py ./tests/handlers/test_typing.py ./tests/rest/test_events.py ./tests/rest/test_presence.py ./tests/rest/test_profile.py ./tests/rest/test_rooms.py ./webclient/components/fileUpload/file-upload-service.js ./webclient/components/matrix/matrix-service.js

Rename MockHttpServer to MockHttpResource as it stands for one server resource rather than an entire server

Removed http_server from HomeServer. Updated unit tests to use either resource_for_federation or resource_for_client depending on what is being tested.

Define the concept of a 'federation Query'; creating API for making and handling Queries on the Federation's increasingly-inaccurately-named ReplicationLayer

add in copyrights to everything, not just the synapse subdir, and add a copyrighter.pl whilst we're at it