added an option to force the redraw of a list, even if the cached lists are the
same (which is the case when we just added another annotation)
{{! template used by the jquery ui tooltip }}
<div class='Ldt-tooltip'>
<div class='title'>{{title}}</div>
<div class='time'>{{begin}} : {{end}} </div>
<div class='description'>{{description}}</div>
</div>