Chat packets are send to the server and back to the user it is addressed to. Added currentUser to the Settings class. Added an user to the loginresponse packet.
Merge branch 'master' of https://github.com/JordySipkema/LD326_RH_A5

Conflicts:
	RH_APP/GUI/CreateScreen.cs
	RH_APP/GUI/LoginScreen.cs
	RH_Server/Server/ClientHandler.cs
Enclosed the updateGraph function with a try catch to prevent the program from crashing when a client is not used in the main screen.
Merge branch 'master' of https://github.com/JordySipkema/LD326_RH_A5