Added clarifying text to pull data to Excel scripts

Lisa from Benton suggested I add "last three digits" to all of the talk
about x1 numbers. Done. I also created a dedicated file for the
REVW/REVS dialog, and renamed the old "pull PND2 data..." dialog to read
"pull REPT data...", matching the dialog name in script. Also, deleted
the old "pull cases into Excel" dialog, as it is depreciated.