Investigate wifi connection behaviour

[mp-se]

Investigate wifi connection behaviour. Some sources point to that the esp will connect to the last wifi ap and not the strongest if multiple ap with the same name exist.

If this is true then add an option so scan for the strongest ap during startup

[mp-se]

Ther might be a difference between esp8266 and esp32, the default settings for esp32 points to that it does a scan before connection

[mp-se]

Closing this since the esp32 does a scan according to documentation. Arduino for esp8266 is not really developed any further

[mp-se]

The esp8266 seams to favour the latest connected AP even though it has bad reception, should be fixed for that target

[mp-se]

Created gravitymon gateway to improve ble and wifi connectivity. Implemented in 2.0 b1