Improved messages history. Messages sent from players are now kept if they disconnect. They are now saved with the exact date to sort them in order. The message Report-messages-history now only use _Messages_ tag to display the chat history with format of lines defined with the new message Report-message-format (you can check the main page to see them).
Comments are now saved in comments table, preventing creation of table per report. Therefore, the old comments will not be displayed if you update.
Exempt permission is now checked if the player is online, preventing him from keeping his privilege when it is removed and he hasn't yet disconnected.