fixes models

representatives/migrations/0001_initial.py

representatives/migrations/0002_representative_photo.py

representatives/migrations/0003_auto_20150311_1509.py

representatives/migrations/0004_representative_country.py

representatives/migrations/0005_auto_20150319_1620.py

representatives/migrations/0006_auto_20150320_1549.py

representatives/migrations/0007_auto_20150323_1017.py

representatives/migrations/0008_auto_20150422_0518.py

representatives/migrations/0009_auto_20150428_0455.py

representatives/migrations/0010_auto_20150527_1401.py

representatives/migrations/0011_auto_20150528_1608.py

representatives/migrations/0011_auto_20150529_1516.py

representatives/migrations/0012_auto_20150528_1611.py

representatives/migrations/0013_auto_20150528_1617.py

representatives/migrations/0014_merge.py

representatives/migrations/0015_auto_20150603_1216.py

representatives/migrations/0016_auto_20150603_1702.py

representatives/models.py