Added TODOs and comments to what needs attention.
Added a test message that sends a user input message to localhost.
Added a test friendList modifier (append).
Fixed disconnect method for client.
More exception handling and closed streams.
Added a message that displays when a client has disconnected.
*Warning* Added 2 fields (friendList and chatLine) as class members to make them visible in other methods.
Merge remote-tracking branch 'psimeonov/rvp-chat-client-improvements'