fix #1409: tom-select dropdown will be shaded in table-responsive

src/pages/_includes/ui/select.html

@@ -65,8 +65,7 @@
 		var el;
 		window.TomSelect && ({% if jekyll.environment == 'development' %}window.tabler_select["select-{{ id }}"] = {% endif %}new TomSelect(el = document.getElementById('select-{{ id }}'), {
 			copyClassesToDropdown: false,
-			// dropdownClass: 'dropdown-menu ts-dropdown',
-			// optionClass: 'dropdown-item',
+			dropdownParent: 'body',
 
 			{% unless include.show-search %}
 			controlInput: '<input>',