navigation to class fixed if file not opened (IDEADEV-41617 re-fixed)
reverted
cleanup
[vcs] IDEA-105707 Update Project Info: fix show diff for Created files

The root cause was that the file type of the Created change was
identified incorrectly as "Modified" and treated further as modified
(and it was not possible to show this modified file without the
"before"-content).

Fix looking for the closest parent GroupTreeNode: when changes are
grouped by folders, the GroupTreeNode is not the first parent,
but the first parent after all directory nodes.