Issue #228 fixed

android/Pictogram/commonlibrary/src/main/java/com/yottacode/pictogram/net/NetService.java

@@ -155,7 +155,7 @@ public class NetService implements Runnable, RestapiWrapper.iSilentLogin {
                 public void result(JSONObject result) {
                     try {
                         final float version = Float.valueOf(result.getString("version"));
-                        
+
                         if (PCBcontext.getActivityContext() != null && version > DeviceHelper.getAppVersion() && newVersionContext!=PCBcontext.getActivityContext()) {
                             newVersionContext=PCBcontext.getActivityContext(); // prevent from showing several times the alert
                             newVersionAlert(version,PCBcontext.getActivityContext(), version);

android/Pictogram/commonlibrary/src/main/java/com/yottacode/pictogram/tools/PCBcontext.java

@@ -65,7 +65,6 @@ public  final class PCBcontext {
             throw new java.lang.AssertionError("init must be called once previously ");
         }
 
-        Log.i(PCBcontext.class.getCanonicalName(), "User set at student " + student.get_name_stu()+ (student.is_supervisor() ? " with supervisor "+student.get_name_sup():"."));
         wrapper.setToken(token);
         pcbdb = new PCBDBHelper(null, 2, student);
         pcbdb.user_online(token!=null);