Basic image dialog integration with ACF.
Hide tabs without active fields.
Do not register tabs' content when they are removed.
Remove advanced tabs on all editors.
Integrated link dialog with ACF.
Integrated table dialog with ACF.
Reset default values for hidden inputs.
Integrated div dialog with ACF.
Integrated flash dialog with ACF.
Integrated iframe dialog with ACF.
Integrated dialogadvtab with ACF.
Do not touch dialog's private parts.
Docs.
Merge branch 't/9990' into major