Fix the language display scroll sync with regions map

* Remove jquery.viewport which was not able to give correct viewport
relative to container.
* The scroll syncing part is written by Niklas

Change-Id: I1cbeaa2a5c297deab7338f331d8db69c17aa2214

examples/index.html

@@ -19,7 +19,6 @@
 		<!-- Source -->
 		<script src="../data/ext.uls.data.js"></script>
 		<script src="../resources/ext.uls.data.utils.js"></script>
-		<script src="../resources/jquery.viewport.js"></script>
 		<script src="../resources/ext.uls.lcd.js"></script>
 		<script src="../resources/ext.uls.languagefilter.js"></script>
 		<script src="../resources/ext.uls.core.js"></script>