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

Start phasing out HttpServer: we should be using Resources instead. Added resource_for_client/federation/web_client to the HomeServer and hooked the C-S servlets to operate on resource_for_client. Dynamically construct the Resource tree.

completely change the CSS to be an entirely 'position: absolute' layout rather than top-to-bottom. makes the overscroll much more predictable and sane and not dependent on CSS expressions.

An initial hack at storing presence state-change mtimes in database and presenting age durations to clients/federation events

Set datastore's .hs field in SQLBaseStore rather than in the toplevel DataStore mixed-in result class

Add a HomeServer.parse_roomalias() to avoid having to RoomAlias.from_sring(..., hs=hs) - similar to parse_userid()

Now that HS->HS Profile lookups use Federation Queries, we don't need the 'local_only' antirecursion hack

Use new Federation Query API to implement HS->HS fetching of remote users' profile information instead of (ab)using the client-side REST API

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

Handle a potential race in the notifier when calling get_events_for which resulted in an uncaught KeyError