Upgrade jQuery to 2.1.0

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/html/meta-header.html

@@ -3,7 +3,7 @@
 
   <link rel="stylesheet" type="text/css" href="{% get_media_prefix %}theme/jquery-ui-1.10.3.custom.min.css" />
   <link rel="stylesheet" type="text/css" href="{% get_media_prefix %}style.css" />
-  <script src="{% get_media_prefix %}js/jquery-1.9.1.min.js" type="text/javascript"></script>
+  <script src="{% get_media_prefix %}js/jquery-2.1.0.min.js" type="text/javascript"></script>
   <script src="{% get_media_prefix %}js/jquery-ui-1.10.3.custom.min.js" type="text/javascript"></script>
   <script src="{% get_media_prefix %}js/jquery.autogrow-textarea.js" type="text/javascript"></script>
   <script src="{% get_media_prefix %}js/jquery.sortElements.js" type="text/javascript"></script>