Adding the a hasToolTip to allow css classes to be added within maps

The current functionality expects the tooltipClass to be bound like this:
 
<div data-bind=”css: tooltipClassName”></div>
 
Where tooltipClassName is either “” or “has-error”.
 
Having a hasTooltip property allows us to have multiple css bindings on the same field (true for nearly every case):
 
<div data-bind=”css:{‘has-error’:value.hasTooltip, ‘another-class’:anotherClassApplied}”></div>

This can also be solved by doing 'another-class':tooltipClassName, but is not explicit.