Serial monitor: added 230400 and 250000 baud rates. Fixes #2796 and #341

Author: Federico Fissore

app/src/processing/app/AbstractMonitor.java

@@ -138,7 +138,7 @@ public void actionPerformed(ActionEvent event) {
 
     String[] serialRateStrings = {
             "300", "1200", "2400", "4800", "9600",
-            "19200", "38400", "57600", "115200"
+            "19200", "38400", "57600", "115200", "230400", "250000"
     };
 
     serialRates = new JComboBox();