Added ability for derived Broadcast class to add to configuration output.

src/main/java/altk/comm/engine/Broadcast.java

@@ -1429,7 +1429,11 @@ public abstract class Broadcast
     	JSONObject dataMap = new JSONObject();
     	dataMap.put(CommEngine.DAILY_PAUSE_KEY, daily_pause);
     	dataMap.put(CommEngine.DAILY_RESUME_KEY, daily_resume);
+    	childAddConfigJSON(dataMap);
 		return dataMap;
 	}
 
+	protected void childAddConfigJSON(JSONObject dataMap) {
+	}
+
 }

src/main/java/altk/comm/engine/CommEngine.java

@@ -7,7 +7,6 @@ import java.io.IOException;
 import java.io.PrintWriter;
 import java.time.LocalTime;
 import java.time.format.DateTimeFormatter;
-import java.util.Date;
 import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.Iterator;