dev/accessiblity#3 Add aria-label to datepicker element

[monishdeb]

Overview

This PR adds aria-label attribute to datepicker date and time field.

Before

After

Technical Details

As per the datepicker enhancment, aria-label will be added to the date field if provided in attribute:

$this->add(
  'datepicker',
  'field_2',
  ts('Date Field'),
  array(
    'class' => 'some-css-class',
    'aria-label' => ts('Date field'), // optional if label is present
    'time-placeholder' => ts('Time'), // optional
  ),
  TRUE,
  array('time' => FALSE, 'date' => 'mm-dd-yy', 'minDate' => '2000-01-01')
);

Whereas time field uses the placeholder.

[colemanw]

Excellent little improvement. Thanks Monish.

[monishdeb]

Thanks @colemanw