左侧树状图更改，及部分样式调整

shuishen

2021-06-08 23346a0c7f9eb68a999fab429355a14b592bc2f7

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//>>built
define({add:"Hinzuf\u00fcgen",addAuthor:"Autor hinzuf\u00fcgen",addContributor:"Mitwirkenden hinzuf\u00fcgen"});