timeouts in OnlineOptions are in millis

[Ladicek]

For historical reasons, timeouts in the OnlineOptions class are expected to be provided in milliseconds. Everywhere else (Administration etc.), we use seconds, as that is much more human-friendly.

We should change the OnlineOptions class to accept seconds as well. This would of course be backwards incompatible, so can only be done in 2.0.

[Ladicek]

If at all possible, old methods that accept millis should be kept and deprecated, while new methods should be added. That way, it could be done before 2.0. But I'm not sure if it's feasible, so for now, I'm keeping the 2.0.0 milestone.