File upload no longer requires the route.
Rejigging file upload
updated serializers in file upload example
Merge branch 'master' into file-upload

Conflicts:
	fileupload_example/fileupload_example/templates/home.html
	swampdragon/tests/serializers.py
	swampdragon/tests/test_serializer.py
Added test for file upload
Improve the file id hash
fixed boundary issue in FileUploadRequestData
Added tests for file upload example.
Ensure that publish_fields and update_fields are not strings