Merge branch '2.8' into 3.4

* 2.8:
  [Intl] Update ICU data to 61.1
  [Validator] Add Japanese translation
  Support phpdbg SAPI in Debug::enable()
  [Ldap] cast to string when checking empty passwords
  [Validator] sync validator translation id
  no type errors with invalid submitted data types
  [FrameworkBundle] Partially revert HttpCache is not longer abstract (4d075da)
  [Finder] Fixed leading/trailing / in filename
  allow html5 compatible rendering of forms with null names
  Change datetime input to datetime-local

Author: fabpot

Resources/views/Form/form_div_layout.html.twig

@@ -327,7 +327,7 @@
     {%- else -%}
         {% set form_method = "POST" %}
     {%- endif -%}
-    <form name="{{ name }}" method="{{ form_method|lower }}"{% if action != '' %} action="{{ action }}"{% endif %}{% for attrname, attrvalue in attr %} {{ attrname }}="{{ attrvalue }}"{% endfor %}{% if multipart %} enctype="multipart/form-data"{% endif %}>
+    <form{% if name != '' %} name="{{ name }}"{% endif %} method="{{ form_method|lower }}"{% if action != '' %} action="{{ action }}"{% endif %}{% for attrname, attrvalue in attr %} {{ attrname }}="{{ attrvalue }}"{% endfor %}{% if multipart %} enctype="multipart/form-data"{% endif %}>
     {%- if form_method != method -%}
         <input type="hidden" name="_method" value="{{ method }}" />
     {%- endif -%}