[5.0] Add javascript removals from PR #40302#98

HLeithner merged 3 commits intojoomla:5.0joomla/Manual:5.0from

richard67:5.0-add-js-removals-to-44-50-removed-backward-incompatibility.mdrichard67/Manual:5.0-add-js-removals-to-44-50-removed-backward-incompatibility.mdCopy head branch name to clipboard