do not override transmitter id

Author: dernasherbrezon

src/main/java/ru/r2cloud/satellite/SatelliteDao.java

@@ -234,7 +234,10 @@ private void normalize(Satellite satellite) {
 		}
 		for (int i = 0; i < satellite.getTransmitters().size(); i++) {
 			Transmitter cur = satellite.getTransmitters().get(i);
-			cur.setId(satellite.getId() + "-" + i);
+			// fallback to old format
+			if (cur.getId() == null) {
+				cur.setId(satellite.getId() + "-" + i);
+			}
 			cur.setEnabled(satellite.isEnabled());
 			cur.setPriority(satellite.getPriority());
 			cur.setPriorityIndex(satellite.getPriorityIndex());