Merge pdu and event objects

do *not* depend on external websites to host our JS - if nothing else, it makes hacking on synapse when offline (e.g. on planes) a huge PITA :(

Remove scope.members from RoomController and use modelService instead. This may make things unstable.

Request logging

Conflicts:
	setup.py
	synapse/storage/_base.py
	synapse/util/async.py

Remove getUserDisplayName and move that logic the filter mUserDisplayName. Update references. Skip tests for now as there are some unresolved DI issues for filters.

Previously, there was some of it in a lovely generic directive, but the
core of it was hard coded id attributes in RoomController. It's now all
generic in a directive: the room history you get when you up/down arrow
is determined by the value of the attribute e.g. command-history="!foo:bar"
would present the history for !foo:bar. In practice, this is {{room_id}}
in the html.