silverstripe/silverstripe-cms — pull request #146 by ajshort (2012-06-11 11:26:44+00:00)
Title: MINOR: Always include tree CSS so tree icons are consistently styled.

Setting tree icon definitions via $icon is currently broken as the deferred loading JS does not append the custom inline CSS. Globally including it means that the tree icon are styled, and icons inside TreeDropdownFields are also styled.