Revert CSRF change (#2009)

application/views/partial/header_js.php

@@ -16,6 +16,8 @@
 		from: '<?php echo $this->config->item('notify_vertical_position'); ?>'
 	}});
 
+	var post = $.post;
+
 	var csrf_token = function() {
 		return Cookies.get('<?php echo $this->config->item('csrf_cookie_name'); ?>');
 	};
@@ -24,23 +26,9 @@
 		return { <?php echo $this->security->get_csrf_token_name(); ?> : function () { return csrf_token();  } };
 	};
 
-	var ajax = $.ajax;
-
-	$.ajax = function() {
-	    var args = arguments[0];
-
-		if (args['type'] && args['type'].toLowerCase() == 'post' && csrf_token()) {
-			if (typeof args['data'] === 'string')
-			{
-				args['data'] += $.param(csrf_form_base());
-			}
-			else
-			{
-				args['data'] = $.extend(args['data'], csrf_form_base());
-			}
-		}
-
-		return ajax.apply(this, arguments);
+	$.post = function() {
+		arguments[1] = csrf_token() ? $.extend(arguments[1], csrf_form_base()) : arguments[1];
+		post.apply(this, arguments);
 	};
 
 	var setup_csrf_token = function() {