Remove obsolete invert option and simplify layout

Author: MisatoTremor

reference/forms/types/dateinterval.rst

@@ -30,7 +30,6 @@ data can be a ``DateInterval`` object, a `RFC 3339`_ duration string or an array
 |                      | - `hours`_                                                                        |
 |                      | - `minutes`_                                                                      |
 |                      | - `seconds`_                                                                      |
-|                      | - `invert`_                                                                       |
 |                      | - `placeholder`_                                                                  |
 |                      | - `input`_                                                                        |
 |                      | - `widget`_                                                                       |
@@ -256,15 +255,6 @@ when the ``widget`` option is set to ``choice``::
 
     'seconds' => range(1, 60)
 
-invert
-~~~~~~
-
-**type**: ``boolean`` **default**: ``false``
-
-Default value of the invert field type::
-
-    'invert' => false
-
 Inherited Options
 -----------------
 
@@ -287,26 +277,18 @@ These options inherit from the :doc:`form </reference/forms/types/form>` type:
 Field Variables
 ---------------
 
-+--------------+-------------+-----------------------------------------------------------------+
-| Variable     | Type        | Usage                                                           |
-+==============+=============+=================================================================+
-| widget       | ``mixed``   | The value of the `widget`_ option.                              |
-+--------------+-------------+-----------------------------------------------------------------+
-| with_years   | ``Boolean`` | The value of the `with_years`_ option.                          |
-+--------------+-------------+-----------------------------------------------------------------+
-| with_months  | ``Boolean`` | The value of the `with_months`_ option.                         |
-+--------------+-------------+-----------------------------------------------------------------+
-| with_weeks   | ``Boolean`` | The value of the `with_weeks`_ option.                          |
-+--------------+-------------+-----------------------------------------------------------------+
-| with_days    | ``Boolean`` | The value of the `with_days`_ option.                           |
-+--------------+-------------+-----------------------------------------------------------------+
-| with_hours   | ``Boolean`` | The value of the `with_hours`_ option.                          |
-+--------------+-------------+-----------------------------------------------------------------+
-| with_minutes | ``Boolean`` | The value of the `with_minutes`_ option.                        |
-+--------------+-------------+-----------------------------------------------------------------+
-| with_seconds | ``Boolean`` | The value of the `with_seconds`_ option.                        |
-+--------------+-------------+-----------------------------------------------------------------+
-| with_invert  | ``Boolean`` | The value of the `with_invert`_ option.                         |
-+--------------+-------------+-----------------------------------------------------------------+
+============  ===========  ========================================
+Variable      Type         Usage
+============  ===========  ========================================
+widget        ``mixed``    The value of the `widget`_ option.
+with_years    ``Boolean``  The value of the `with_years`_ option.
+with_months   ``Boolean``  The value of the `with_months`_ option.
+with_weeks    ``Boolean``  The value of the `with_weeks`_ option.
+with_days     ``Boolean``  The value of the `with_days`_ option.
+with_hours    ``Boolean``  The value of the `with_hours`_ option.
+with_minutes  ``Boolean``  The value of the `with_minutes`_ option.
+with_seconds  ``Boolean``  The value of the `with_seconds`_ option.
+with_invert   ``Boolean``  The value of the `with_invert`_ option.
+============  ===========  ========================================
 
 .. _`RFC 3339`: http://tools.ietf.org/html/rfc3339