Support highlighting a set of lines in r/o widget.
Bug 446697 - Leaking inputManager listeners in new Hover code (content type fix)

Change-Id: I7a1d75ff2b90591168d1c6538f62d780a2e04ba4
Signed-off-by: Eric Moffatt <emoffatt@ca.ibm.com>
Support highlighting a set of lines in r/o widget.-- fixed the end line number