Set up the public ip/port

[tikismoke]

Related to https://github.com/domogik/domogik/issues/417

• [x] Need to check if on a wifi (with ssid_name or something unique) or gsm/data.

• [x] While sync ask user if it is the local network.

• [x] When outside of the saved local network change URL/PORT for REST requests.

• [x] Adapt QRcode reader.

• [x] Look at old code; in past it was named external_address/port.

• [x] In menu adapt a list for wifi SSID.

• [ ] Stop Mq if connected outside home.

[tikismoke]

http://stackoverflow.com/questions/4238921/detect-whether-there-is-an-internet-connection-available-on-android

http://stackoverflow.com/questions/3767591/check-intent-internet-connection

[tikismoke]

http://stackoverflow.com/questions/21391395/get-ssid-when-wifi-is-connected