Use bootstrap-wysiwyg for editor
Server creates default content file if necessary
Refactor user code in client and server

Client can set the current user's name.
Client displays a greeting to the current user.
Server sends the active users list to the client.
Client displays active users.
Include styles for displaying these things.
Add status bar and typing status

User will see a "Typing..." status when they're typing in the document.
After the save has been sent to the server, the status will be "Saved".
Put activeUsers and status in a statusBar.
Change header of index.html