Delete chat

[winstonll]

When you have a lot of chats, like Albert Stali right now, you should be able to delete chats. Basically once you delete a chat, it will no longer show up, but when a new message gets sent, the chat with that person should come back with the old stuff (basically like every chat system there is).

Also, the dialogues should appear in reverse chronological order. So the most recent chat should be on top.