.gitattributes file to normalize line endings
close dropdown on destroy, fixes #17275
Monitor focus from Menu rather than MenuItem, refs #7111.
This removes the indirect _FocusMixin dependency from MenuItem.
fix missing dependency, refs #17022
Remove RTL CSS for TimePicker on IE, it's no longer needed, refs #7631.
It's actually detrimental: it causes a slight jiggle on hover.
(cherry picked from commit 02c09eea73e459e3c43d9a80bc81fb2b70200fae)