Revert "Use mousemove instead mouseenter event in the editable area."

This reverts commit 7ac67754e05a70ee5cf1dc1c41750a4054a7d6e7.
Add a patch to fix selector-native behavior in YUI3

This commit should be reverted as soon as YUI's #1925
is being fixed:
https://github.com/yui/yui3/issues/1925

Fixes #9