Modal callbacks

Callback	Type	Description
`@before-open`	`function`	Callback for actions before opening a modal
`@after-open`	`function`	Callback for actions after opening a modal
`@before-close`	`function`	Callback for actions before closing a modal
`@after-close`	`function`	Callback for actions after closing a modal
`@on-submit`	`function`	Callback for actions after submit all forms on a modal