Chat

Must-haves:
- Tabbed in dock
- Fullscreen in content
- Message history (server side)
- URL highlighting

Good to have:
- Text expansion
- Text input formatting
- Rich text display
- Rich content previews (images, maps, videos, contacts, ...)
- Command line syntax
- Emoticons
- Group chat (conferencing)
- Buzz/alert
- Typing/delivered/displayed notification
- Searchable chat history
