Possibly related to #56. All times show in (probably) UTC for both individual posts and the game day start time. This is fine. The problem is that the game day, if it starts in the "future" (based on browser time), will show "began 0 minutes ago". So, we need to add an explicit UTC indicator to this, and not adjust the "time ago" to local time - it should all be calculated in UTC.
Possibly related to #56. All times show in (probably) UTC for both individual posts and the game day start time. This is fine. The problem is that the game day, if it starts in the "future" (based on browser time), will show "began 0 minutes ago". So, we need to add an explicit UTC indicator to this, and not adjust the "time ago" to local time - it should all be calculated in UTC.