* Fixes the altgr+e shortcut on Windows
(Fixes https://github.com/vector-im/vector-web/issues/2561)
* Fixes the shortcuts to be cmd+e on mac rather than ctrl+e
which is more normal and doesn't clobber ctrl+e which old
school unix types use for go-to-end-of-line.
and mark it as one if so.
Also change the heuristic to only count rooms with 2 total members rather than 2 joined members, otherwise this is going to mark any room as a DM if someone creates a room, invites a bunch of people and you happen to be first to join.
* Add the 'is_direct' flag to rooms created for DMs
* For invites, look for the DM flag when getting the DM user ID for a room
* When accepting an invite, look for the flag and mark the room as a DM room if appropriate.
Plus a number of other tidyups:
* Fix /join to dispatch a view_room for the room alias
with the additional auto_join parameter
* Make RoomView automatically join the room if the auto_join
parameter is true and the user isn't already in it
* Tidy up RoomView's peeking code, also fixing
https://github.com/vector-im/vector-web/issues/1220
in react-sdk (although it still requires a synapse change
to actually fix, but react-sdk does 'the right thing').
* Remove duplication of usage text from /join command
* Amalgamate MatrixChat::_viewRoom's many, many parameters
into an object and sort out case consistency a little.
Add a callback to RoomView that it can give the room ID to once it's resolved it, since this lookup is now the responsibility of the roomview and only the roomview. The view_room action now has either an alias or an ID, not both. Also fix RoomView to load the room properly and not try to peek when it shouldn't.
Sorts out more of the room joining mess. currentRoom which held the room ID is now more appropriately called currentRoomId. RoomView will now take a roomID or alias as before but will now look up the room ID as required if given the alias. Also, now look up the alias every time you click on it so it's never stale, rather than looking in your current rooms for a room that thinks it has that ID.
