Fix xss vulnerability in chat
Fix xss vulnerability in chat

Html tags were not escaped in the socket.io event for chat messages. The whole chat system should still be refactored to only have one request per chat message instead of one REST request and one socket.io event.

Farbod909/MorTeam-server-website,Farbod909/Expressiment,Farbod909/Expressiment,Farbod909/MorTeam-server-website