Function: Deprecating is_support_footer_widget_right_margin function.

Function: Deprecating prepare_button_defaults function.

Function: Deprecating prepare_divider_defaults function.

Function: Deprecating prepare_html_defaults function.

Function: Deprecating prepare_menu_defaults function.

Function: Deprecating prepare_social_icon_defaults function.

Function: Deprecating prepare_widget_defaults function.