title: validateEmail requires lowercase values?
body: <p>Not sure If I am missing something here but appears that when I use 'validateEmail' it requires the email address to be in lowercase.  If you run my code below and type in your name and an email address with on uppercase value it will not submit.  However, if you remove all uppercase values to lower it works fine.  Does anyone know if this is by design or perhaps a bug?</p>
  
  <pre><code>function doGet() {
  //  // Create the signup application
   var app = UiApp.createApplication();
  
    //Create vertical panel to hold the widgets
    var panelMain = app.createVerticalPanel().setId('mainPanel');
  
    var lblName = app.createLabel('Name:').setId('lblName').setWidth('80px')
    .setStyleAttribute("fontFamily","Trebuchet MS")
    .setStyleAttribute("fontSize","12pt");
  
  
    var txtName = app.createTextBox().setName('txtName').setId('txtName').setWidth('300px')
    .setStyleAttribute("background-color", "#ffbb00")
    .setStyleAttribute("fontFamily", "Trebuchet MS")
    .setStyleAttribute("fontSize", "12pt");
  
    var lblEmail = app.createLabel('Email:').setId('lblEmail').setWidth('80px')
    .setStyleAttribute("fontFamily","Trebuchet MS")
    .setStyleAttribute("fontSize","12pt");
  
    var txtEmail = app.createTextBox().setName('txtEmail').setId('txtEmail').setWidth('300px')
    .setStyleAttribute("background-color", "#ffbb00")
    .setStyleAttribute("fontFamily", "Trebuchet MS")
    .setStyleAttribute("fontSize", "12pt");
  
    var lblRequiredEmail = app.createLabel('*').setId('lblRequiredEmail');
    var lblRequiredName = app.createLabel('*').setId('lblRequiredName');
    var lblStatus = app.createLabel("Sign up to receive specials and promotions.").setId('lblStatus')
    .setStyleAttribute("fontFamily","Trebuchet MS")
    .setStyleAttribute("fontSize","12pt");
  
    var btnSubmit = app.createButton("Submit").setId("btnSubmit").setWidth("120px")
    .setStyleAttribute("fontFamily", "Trebuchet MS")
    .setStyleAttribute("fontSize", "12pt")
  
  
    var gridMain = app.createGrid(4, 3).setId('gridMain');
  
   gridMain.setWidget(0,0,lblName)
   .setWidget(0,1,txtName)
   .setWidget(0, 2, lblRequiredName)
   .setWidget(1, 0,lblEmail)
   .setWidget(1, 1,txtEmail)
    .setWidget(1,2,lblRequiredEmail)
   .setWidget(2,1,btnSubmit);
  
    panelMain.add(lblStatus).add(gridMain);
  
  
  
  
    //Create server handler for when user submits the information
    var serverHandler = app.createServerHandler('Signup')
   .validateEmail(txtEmail)
   .validateLength(txtName,1,500)
   .addCallbackElement(panelMain);
  
  
    var validateEmail = app.createClientHandler()
    .validateNotEmail(txtEmail)
    .forTargets(txtEmail).setStyleAttribute("color", "red")
    .forTargets(lblRequiredEmail).setVisible(true)
    .setText('Invalid Email')
    .setStyleAttribute("color", "red");
  
  
    var validateName = app.createClientHandler()
    .validateNotLength(txtName,1,500)
    .forTargets(txtName).setStyleAttribute("color", "red")
    .forTargets(lblRequiredName).setVisible(true)
    .setText('Please Enter Name')
    .setStyleAttribute("color", "red");
  
   btnSubmit.addClickHandler(serverHandler).addClickHandler(validateEmail).addClickHandler(validateName);
     app.add(panelMain);
    return app;
  }
  
  function Signup(thisForm)
  {
  
    var app = UiApp.getActiveApplication();
    var txtName = thisForm.parameter.txtName;
    var txtEmail = thisForm.parameter.txtEmail;
    var lblStatus = thisForm.parameter.lblStatus;
  
    //Other code to save to data store
   ////
    app.getElementById("lblStatus").setText('Thanks for signing!');
    app.getElementById('gridMain').setVisible(false);
  
    return app;
  
   // return app2; //Everything is working fine right now 
  
  }
  </code></pre>