Added tone keys for some wireless mic brands

Renamed CTCSS stuff to Tone key
Changed PTT key in mic TX (was left, now right) to allow easier exit
Mic samplerate bumped to 48kHz
Updated binary

firmware/application/CMakeLists.txt

@@ -151,7 +151,7 @@ set(CPPSRC
 	modems.cpp
 	audio.cpp
 	${COMMON}/bch_code.cpp
-	ctcss.cpp
+	tone_key.cpp
 	de_bruijn.cpp
 	encoder.cpp
 	emu_cc1101.cpp