Datepicker: fix jshint and htmllint issues, code style

Author: fnagel

demos/datepicker/show-week.html

@@ -28,7 +28,7 @@
 
 <div class="demo-description">
 <p>The datepicker can show the week of the year. The calculation follows
-	<a href="http://www.unicode.org/reports/tr35 /tr35-dates.html#Date_Field_Symbol_Table">Unicode CLDR specification</a>.
+	<a href="http://www.unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table">Unicode CLDR specification</a>.
 	This means that some days from one year may be placed into weeks 'belonging' to another year.</p>
 </div>
 </body>