feature #4732 [Reference] add missing reference options and descriptions (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
----------

[Reference] add missing reference options and descriptions

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all
| Fixed tickets |

Commits
-------

9e69638 add missing reference options and descriptions

Author: weaverryan

reference/configuration/framework.rst

@@ -22,10 +22,10 @@ Configuration
 * `default_locale`_
 * `trusted_proxies`_
 * `form`_
-    * enabled
+    * :ref:`enabled <form-enabled>`
 * `csrf_protection`_
-    * enabled
-    * field_name
+    * :ref:`enabled <csrf-protection-enabled>`
+    * `field_name`_
 * `session`_
     * `name`_
     * `cookie_lifetime`_
@@ -50,6 +50,7 @@ Configuration
     * :ref:`enabled <translator.enabled>`
     * `fallback`_
 * `validation`_
+    * :ref:`enabled <validation-enabled>`
     * `cache`_
     * `enable_annotations`_
     * `translation_domain`_
@@ -208,9 +209,40 @@ see :doc:`/cookbook/request/load_balancer_reverse_proxy`.
 form
 ~~~~
 
+.. _form-enabled:
+
+enabled
+.......
+
+**type**: ``boolean`` **default**: ``false``
+
+Whether or not to enable support for the Form component.
+
+You will also have to disable form support if you want to
+:ref:`disable the validation support <validation-enabled>`.
+
 csrf_protection
 ~~~~~~~~~~~~~~~
 
+.. _csrf-protection-enabled:
+
+enabled
+.......
+
+**type**: ``boolean`` **default**: ``true`` if form support is enabled, ``false``
+otherwise
+
+This option can be used to disable CSRF protection of forms. You need to
+disable CSRF protection to be able to disable session. For example, this
+is useful when you only use forms in an API-only website.
+
+field_name
+..........
+
+**type**: ``string`` **default**: ``"_token"``
+
+The name of the hidden field used to render the :ref:`CSRF token <forms-csrf>`.
+
 session
 ~~~~~~~
 
@@ -538,6 +570,16 @@ For more details, see :doc:`/book/translation`.
 validation
 ~~~~~~~~~~
 
+.. _validation-enabled:
+
+enabled
+.......
+
+**type**: ``boolean`` **default**: ``true`` if :ref:`form support is enabled <form-enabled>`,
+``false`` otherwise
+
+Whether or not to enable validation support.
+
 cache
 .....