Added ajax callback that currently does nothing.
Updated form atlers for hiding unnecessary field and instance settings.
Moved field formatters to plugins.
Moved field widgets to plugins.
Moved field type definition to plugin.
Issue #1643602 by tms8707056: Fixed Confirmation message not displayed.
Issue #1623534 by jayaram: Modified how we get the language of for a dummy form so that it will not cause a notice for some entities.
Coding standard cleanup.
Added widget settings to button_field_field_widget_info() and removed extraneous empty/isset checks.
Issue #1587382 by ditcheva: Fixed additional class and hide on edit not reflecting their value properly on widget settings form.
Issue #1587382 by ditcheva: Fixed undefined index notices.
Issue #1341578 by sprinkles: Only adding the confirmation setting to the JS if it is not empty.
Fixed typo in README.
Updated group for the reload page action.
Removed custom callback.
Added dummy form to use when viewing the field so that we can still utilize Drupal's ajax framework.
Modified where we get the location for a reload page action.
Change edit form to use Drupal's ajax framwork and added support for the page redirect action.
Added new ajax command for setting a new location for the page (changing location.href).
Modified the entity being passed when triggering the rule event to be wrapped.
Consolidated much of the render code.
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