Probably to be postponed until Tiki 19+ - needs more research (and probably it's own wiki page jQuery-UI Replacement )
We need a non-jquery-ui drag and drop / treeview library for this and to replace what we're using for various other features (perms admin (via smarty_function_treetable), tracker fields admin, structure edit etc)
Possible options are:
- patternfly bootstrap treeview
Apache 2 license
Used in https://packagist.org/packages/execut/yii2-widget-bootstraptreeview
Seems based on https://github.com/jonmiles/bootstrap-treeview
Consolidate menu types as just Bootstrap menus. That is, remove suckerfish and legacy - neither Bootstrap nor suckerfish - menus. Then add Smartmenus (https://www.smartmenus.org/) to enhance/extend Bootstrap menus to regain features lost by the removal of suckerfish menus. This proposal is a wish here: https://dev.tiki.org/item6675.