Conflicts:
	server/routes/install-routes.js

See #31 (comment)

…of the last message

All of the messages were at the same time, so the homeserver, just returned the first one
but in reality, it's a series of messages that happen one after the other so it should return
the last one.

We adjust the timestamps so they actually appear as a series. Although we think
about changing the sort on the date tiebreak when looking backwards in Synapse.