made scrollbar vertical in relation tab to contain more relation from mods. single relation thus can't be scroll by horizontal scrollbar, just click it to look all of them.
将关系页面改为纵向滚动条以支持更多模组加入的关系. 原本单个关系的横向滚动条因此将无法使用，仍然可以点击关系名称展开查看全部对象

try improve performance in huge house