Gravity Perks - Live Preview 1.6.12

• Fixed PHP notice on trashed forms page in the WordPress admin dashboard.
• Added 'gplp_enable_globally' filter to support enabling preview features for forms outside of core/live preview.

Added 'gplp_enable_globally' filter to support enabling preview features for forms outside of core/live preview.

Added support for auto-passing options (i.e. AJAX, Unrequire) on Preview links in Admin Bar menu.
Added support for Live Preview link in Admin Bar menu.
Added support for disabling notifications on Preview and Live Preview submissions.
Added support for auto-passing options (i.e. AJAX, Unrequire) on Preview action link in Form List view.
Added 'gplp_enable_form_action' filter to allow enabling a "Live Preivew" action link to appear for each form in the Form List view.