Added bitrate option for POCSAG baseband, PWMRSSI frequency option

Split SD card wiper app
Cleanup for -Weffc++

firmware/application/ui_record_view.cpp

@@ -42,7 +42,7 @@ void RecordView::toggle_pwmrssi() {
 	// Send to RSSI widget
 	const PWMRSSIConfigureMessage message {
 		pwmrssi_enabled,
-		1000,
+		64,
 		0
 	};
 	shared_memory.application_queue.push(message);