Parse and display node name correctly
Select displayed node on client
Rename 'me' to 'current'
Force redisplay on zoom
Set name for every known node (not only the current one)
Set process title to babelweb
Delete node when its connection is closed

Incompatible change of message format: added a message type
(update or delete).
Be more resilient for node deletion
Validate node state before sending to client

This fixes a bug where new clients would get a bogus state for nodes
that the server couldn't reach.
Sort node list alphabetically
Update git url