Game playing

[jkk]

• [x] Move
• [x] Pass
• [x] Resign
• [x] Send Undo
• [x] Accept/decline undo
• [x] Basic scoring
• [x] Add time - 1 minute, 5 minutes
• [x] Don't send move if stone already present
• [x] Placeholder on click until server confirms
• [ ] Stone hover
• [ ] Safe mobile option? Double tap, or confirm?
• [ ] Confirm resign
• [ ] Prevent illegal moves (ko, suicide)
• [ ] Nicer scoring mode - show score, done feedback
• [ ] Switch to game review; button to review
• [ ] "Are you sure you want to leave this game?" [leave] [don't leave] [resign]
• [ ] Alert when opponent leaves
• [ ] Badge on Play tab (and in window title) for "playing" (green) / unseen move (red)

[hadim]

That issue should be closed in favor of multiple single issues.