Re-roll r9549 with a fix that ensures that sub-editors of a LeafValueEditor will be ignored.
Patch by: t.broyer, bobv
Review by: bobv, rjrjr

Review at http://gwt-code-reviews.appspot.com/1295801


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@9555 8db76d5a-ed1c-0410-87a9-c151d255dfc7