Fixed jQuery deprecations

[alowdon]

Renamed jQuery.unique: https://github.com/jquery/jquery-migrate/blob/main/warnings.md#unique-jqmigrate-jqueryunique-is-deprecated-use-jqueryuniquesort Replaced usage of jQuery.bind: https://github.com/jquery/jquery-migrate/blob/main/warnings.md#pre-on-methods-jqmigrate-jqueryfnbind-is-deprecated Replaced usage of event shorthand: https://github.com/jquery/jquery-migrate/blob/main/warnings.md#shorthand-deprecated-v3-jqmigrate-jqueryfnclick-event-shorthand-is-deprecated

[janez33]

@alowdon thank you man :) saved my day updating wordpress :)