added a function to break a search string in words and count the number of
occurences of those words in the annotations.
<div id='ldt-Show'></div>
<div id='Ldt-ShowAnnotation-audio' class='demo'>
<div id='Ldt-SaTitle'></div>
<div id='Ldt-SaDescription'></div>
<div class='cleaner'>
<!-- \;-->
</div>
</div>
<div id='Ldt-SaKeyword'>
<div id='Ldt-SaKeywordText'></div>
<div class='cleaner'></div>
<div id='Ldt-SaShareTools'>{{{share_template}}}</div>
<div class='cleaner'></div>
</div>
<div id='Ldt-Tags'>Mots clefs :</div>