Update 8- output-final-with-senate.csv

Setting valid district ZIP code for Charles Dent, source: http://www.gpo.gov/fdsys/granule/CDIR-2009-12-01/CDIR-2009-12-01-PA-H-15
Merge pull request #16 from unthunk/patch-1

Update 8- output-final-with-senate.csv