title: knockout validation ignores errorsAsTitle config for input field
body: <p>I'm using knockout (3.0.0) with validation (1.0.2), trying to disable "tooltips" which ko-validation generates for a field when it contains an error:</p>
  
  <p><img src="https://i.stack.imgur.com/yko6u.jpg" alt="enter image description here"></p>
  
  <p>Based on <a href="https://github.com/Knockout-Contrib/Knockout-Validation/wiki/Configuration" rel="nofollow noreferrer">documentation</a>, <code>errorsAsTitle:false</code> should prevent tooltips from displaying, but it seems to ignore <code>false</code>.</p>
  
  <p><a href="http://jsfiddle.net/SAFX/q4QCY/55/" rel="nofollow noreferrer">Fiddle illustrating the issue</a></p>
  
  <p>My current configuration</p>
  
  <pre><code>  ko.validation.rules.required.message = 'Field(s) are required!';
  
    ko.validation.configure({
        registerExtenders: true,
        messagesOnModified: true,
        errorsAsTitle: false,  //&lt;-----problem here
        insertMessages: false,
        decorateElement: true,
        errorElementClass: 'inputError'
    });
  
    function ViewModel() {
        this.name = ko.observable("").extend({
            required: true
        });
    };
  
    ko.applyBindings(new ViewModel());
  </code></pre>