Revert "Merge branch 'outlineViewDisclosureSelectedThemestate' of https://github.com/BlairDuncan/cappuccino into pr-1917"

This reverts commit 345a54e8c911e2e090c5bf0c5d3a7cbf262af466, reversing
changes made to 21301cae21013ba63d5a486cdac7c82be1be8f1b.

This commit is reverted because it causes a non obvious crash when selecting the latest row of a CPOutlineView.

The crash is visible in Tests/Manual/CPOutlineViewTest
Merge branch 'master' of https://github.com/cappuccino/cappuccino