KouChat v0.9.4

• Trying new fix for empty nick list
• Added shortcuts for items in the Tools menu
• Added missing check for invalid nick when other users log on
• Set online variable to current time if client doesn't send that info
• Making sure the privchat window is disposed when closed and user
  is logged off
• Set the nick list to single selection mode
• Added tooltips to some of the settings
• Fixed repaint issue with the scrollbar after being minimized to tray