Fix view_type dynamic inputs on view_filters_page.php

Add the form id so that javascript can retrieve view_type parameter.

view_filters_page.php

@@ -101,7 +101,7 @@
 <div class="space-10"></div>
 <div class="col-md-12 col-xs-12">
 
-	<form method="post" name="filters" action="<?php echo $t_action; ?>">
+	<form method="post" name="filters" id="filters_form_open" action="<?php echo $t_action; ?>">
 
 	<?php # CSRF protection not required here - form does not result in modifications ?>
 	<input type="hidden" name="type" value="1" />