Gravity Forms 2.9.1.2

- Added security enhancements. Credit: Gennady Kovshenin.
- Fixed an issue with the ID attribute of the accepted file types message container when multiple File Upload fields are present on the page.
- Fixed an issue where a new field could be assigned the same id as a field to be deleted resulting in the new field being lost when the original field is deleted on save.
- Fixed an issue with File Upload field URLs in text format notifications containing escaped ampersands.

- Added support for Mastercard 2-series number.
- Fixed missing confirmation message anchor for AJAX enabled single page forms.
- Fixed an issue where the urls of deleted files could remain in the multi-file enabled upload field entry value when editing the entry, if a new file was added at the same time.
- AF: Added "description" settings field property to display description below settings field.
- AF: Added "no_choices" select settings field property to display message when no choice are available for field.

- Added 'gform_multifile_upload_field' filter to allow field object to be filtered.
- Added 'gform_duplicate_field' javascript filter to allow duplicated field to be changed.
- Added the 'gform_html_message_template_pre_send_email' filter allowing the html formatted notification message to be overridden.
- Updated delivery of files requested for download to prevent third-parties to corrupt the file content.
- Updated the System Report.
- Fixed issues with the Copy System Report button and the form switcher drop down when no-conflict mode is enabled.
- Fixed issue with special characters when defining a new choice group in the bulk editor popup.
- Fixed a PHP warning and fatal error related to the Forms toolbar menu.
- Fixed the extremely outdated version message remaining after updating to the latest version.
- Fixed 'undefined' appearing as a header in the bulk add / predefined choices modal.
- Fixed the Members plugin integration which was missing the System Status page capability (gravityforms_system_status).
- Fixed styling issue with Entry Updated message.
- Fixed the minimum width of the form switcher drop down when all the forms have titles which are only a few characters in length.
- Fixed a potential conflict with other plugins that load modified versions of the WP_Background_Process class.
- Fixed an issue where dynamic population of a field may fail when the value passed in the query string is 0.
- Fixed a PHP notice when using the gf-download file link if the output buffer is not set.
- Fixed currently selected multi-select field choices not being selected when editing an entry.
- Fixed an issue with the confirmation message markup for AJAX enabled forms containing an extra gforms_confirmation_message div.
- Fixed the Forms dashboard widget including trashed forms.
- Fixed a PHP fatal error which occurred on the global settings page of the installation wizard when the entry point was the Forms > Add-Ons page.
- Fixed an issue with the submission time evaluation of conditional logic rules using the contains operator when the rule value is 0.
- Fixed an inconsistency between the front-end and validation character counts for the Paragraph field.
- Fixed a fatal error which could occur when checking if the logging add-on is active in some environments.
- Fixed an issue with license validation request that can prevent license key validation.
- Fixed a PHP notice on the System Status page with PHP versions older than 5.4.
- AF: Fixed a PHP fatal error which could occur with add-ons using the field_map type setting with PHP versions older than 5.3.
- AF: Fixed an issue preventing feeds from being processed in the background.