fixed editing issue for measure log data fields; fixed bug with focalplane...

fixed editing issue for measure log data fields; fixed bug with focalplane fields; changed edit triggers for both table views; non-editable cells in table models no longer have the enabled flag (gives a visual cue that you can't edit the item); fixed bug with connection view where expanded items were not being collapsed

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@1983 41f8697f-d340-4b68-9986-7bafba869bb8