Merge pull request #2938 from WoltLab/selection_tree_support
authorAlexander Ebert <ebert@woltlab.com>
Tue, 18 Jun 2019 10:28:02 +0000 (12:28 +0200)
committerGitHub <noreply@github.com>
Tue, 18 Jun 2019 10:28:02 +0000 (12:28 +0200)
Add abstract object tree node used for selection form fields

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wcfsetup/install/files/lib/data/category/CategoryNode.class.php