Faster accurated location with wifi priority

[pedrxd]

I try to fix this:

• Some times a race condition can happens where wifi response is received before cell response. The cell response is preserved with very bad accuracy. Fix: Accurated location are preserved if received on the race_timeout interval. Wifi has priority and can bypass timeout if the last location only has used cells towers, this give faster accurate locations.
• Multiples request can be send at the same time becouse timeout is handle incorrectly. Timeout variable is update when a response is received. On slow connections duplicates request are sended between the delay of the request and the response. Fix: take care of the last resquest instead of the reponse

[ale5000-git]

@pedrxd Hi, could you please check if the change is still needed with version 1.5.0?

[pedrxd]

Hi, I am not using microg any more. I can't verify the quality of this pull request.