Use more coherent name for chatDisabled
Handle and validate nick changes properly server-side
Handle nick validation errors on the client side
Highlight self on user list
Add spaces for consistency
Use a counter instead of array length to choose user IDs
Remove the user service
Move nick choose modal into its own file
Remove unused container div
Remove debug messages
Don't allow duplicate nicknames
Change all references of nickname to nick for consistency
Rename UserCtrl to UserListCtrl
Minor formatting change