0036587: Scanning barcode is not working in Zebra TC51/TC56 device

diff -r 5b1201348091 web/org.openbravo.mobile.core/source/component/ob-keyboard.js
--- a/web/org.openbravo.mobile.core/source/component/ob-keyboard.js	Tue Jul 25 11:22:45 2017 +0530
+++ b/web/org.openbravo.mobile.core/source/component/ob-keyboard.js	Wed Aug 02 15:33:56 2017 +0200
@@ -547,6 +547,10 @@
         }
       } else if (OB.Format.defaultDecimalSymbol === '.' && actualChar !== '+' && actualChar !== '-') { //Handle any keypress except any kind of dot (.) '+' or '-'
         if (which === 229) {
+          if (this.$.editbox.getContent() != null) {
+            //It seems we are already scanning something, we should ignore this event as it's likely repeated
+            return true;
+          }
           var scan = document.getElementById('_focusKeeper').value;
           for (i = 0; i < scan.length; i++) {
             this.writeCharacter(scan.charAt(i));