Gravity Perks - Nested Forms 1.1.69

Fixed regression where entries wouldn't be saved in certain circumstances if a Nested Form field is conditionally displayed by a calculated field.

Added gpnf_export_parent_entry_row filter to allow disabling the output of parent entry rows alongside their child entry rows.
Added gpnf_export_parent_entry_data_on_child_entry_rows to allow exporting parent entry data on child entry rows.

Fixed inconsistent behavior of :total, :sum, and :count modifiers between the frontend and the backend if the Nested Form field is hidden. The correct behavior is to return 0 if the Nested Form field is hidden.