This reverts commit f286a4fc.

Show the message sending flow state in the messages list:
  - While sending, the message appears semi transparent in the chat.
  - If successfully sent, it appears as before, ie normal
  - In case of failure, it appears in red with an Unsent text.

switch IRC-style command parser to use regexps rather than split(" ") so that it doesn't choke on consecutive whitespaces
yield better errors for invalid commands
don't pass invalid commands through as messages
support kick reasons

BF: presence PUT requests stopped to work with old "state" param yesterday evening :( -https://github.com/matrix-org/synapse/commit/cda31fb7553ba3d880de09a464ae3b62ea6632fc?diff=unified

BF: presence PUT requests stopped to work with old "state" param yesterday evening :( -https://github.com/matrix-org/synapse/commit/cda31fb7553ba3d880de09a464ae3b62ea6632fc?diff=unified

Re-apply fixes to the link-email screen to make it work again (in a somewhat temporary way until home servers sign associations). Unhide the linked emails box.

BF: Do not filter incoming member events. Before, only invitations to the current user  were showned in the recents.

Conflicts:
	CHANGES.rst

Don't do auth for change_membership in federation handler, it doesn't work and federation doesn't do auth in general either. Add a hacky timeout when trying to join a remote room.