Put the notifcation body details as second line of notifcation on Android 5.0+ instead of ticker

#jira UE-66084
#ue4
#android
#fyi Jack.Porter
#rb Jonathon.Lambert

[CL 4532850 by Chris Babcock in Dev-Mobile branch]

Engine/Build/Android/Java/src/com/epicgames/ue4/LocalNotificationReceiver.java

@@ -51,6 +51,7 @@
 			.setContentTitle(title);
 		if (android.os.Build.VERSION.SDK_INT >= 21)
 		{
+			builder.setContentText(details);
 			builder.setColor(0xff0e1e43);
 		}
 		Notification notification = builder.build();