Added EdgeFastLow-settings for modem

[tekomula]

I've added EdgeFastLow -settings for LoRa-modem (BW 62, SF 8, CR 8). Cross-checked the new setting between different points/files in firmware, web and Android-application. Added to different language translations, too.

More info here: https://www.meshhubmids.com/edge.html

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