Merge branch '2.8' into 3.4

* 2.8:
  Fix CS
  Allow reuse of Session between requests
  Provide debug_backtrace with proper args
  forward false label option to nested types
  forward the invalid_message option in date types

Author: nicolas-grekas

Extension/Core/Type/DateTimeType.php

@@ -119,6 +119,11 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 'invalid_message_parameters',
             )));
 
+            if (false === $options['label']) {
+                $dateOptions['label'] = false;
+                $timeOptions['label'] = false;
+            }
+
             if (null !== $options['date_widget']) {
                 $dateOptions['widget'] = $options['date_widget'];
             }

Extension/Core/Type/DateType.php

@@ -77,6 +77,18 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 'error_bubbling' => true,
             );
 
+            if (isset($options['invalid_message'])) {
+                $dayOptions['invalid_message'] = $options['invalid_message'];
+                $monthOptions['invalid_message'] = $options['invalid_message'];
+                $yearOptions['invalid_message'] = $options['invalid_message'];
+            }
+
+            if (isset($options['invalid_message_parameters'])) {
+                $dayOptions['invalid_message_parameters'] = $options['invalid_message_parameters'];
+                $monthOptions['invalid_message_parameters'] = $options['invalid_message_parameters'];
+                $yearOptions['invalid_message_parameters'] = $options['invalid_message_parameters'];
+            }
+
             $formatter = new \IntlDateFormatter(
                 \Locale::getDefault(),
                 $dateFormat,

Extension/Core/Type/TimeType.php

@@ -72,6 +72,18 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 'error_bubbling' => true,
             );
 
+            if (isset($options['invalid_message'])) {
+                $hourOptions['invalid_message'] = $options['invalid_message'];
+                $minuteOptions['invalid_message'] = $options['invalid_message'];
+                $secondOptions['invalid_message'] = $options['invalid_message'];
+            }
+
+            if (isset($options['invalid_message_parameters'])) {
+                $hourOptions['invalid_message_parameters'] = $options['invalid_message_parameters'];
+                $minuteOptions['invalid_message_parameters'] = $options['invalid_message_parameters'];
+                $secondOptions['invalid_message_parameters'] = $options['invalid_message_parameters'];
+            }
+
             if ('choice' === $options['widget']) {
                 $hours = $minutes = array();