NetAssociation enables itself on foreground even when not previously enabled

[benf1977]

I'm trying to do one-off queries of the NTP server using sendTimeQuery. I thus never enable my NetAssociation but it gets enable by the foregrounding event. I just commented those sections out for my own use, but you might want to do some kind of check of whether the user wants the services enabled at all.

[gavineadie]

I agree .. I'm rewriting NetAssociation to get rid of a lot of monkeying around with averages and statistics that don't gain you anything on a device where the first priority is fast user response. We'll see if "enable" and "finish" survive this process!