BUG: back out table range for LUTs from file

Painting in the editor is not showing the correct
colors when the table range is set to 0-255, go back
to using the maxID as the upper range for now.

Issue #3586



git-svn-id: http://svn.slicer.org/Slicer4/trunk@22881 3bd1e089-480b-0410-8dfb-8563597acbee