Make `GetEmrData.py` immune to `string` passed as port number
Merge pull request #86 from indera/fix-sftp-port-string

Make `GetEmrData.py` immune to `string` passed as sftp port number
removed emr sftp server password from required parameters
added default emr password of None
Merge pull request #87 from nrejack/feature/fix_emr_server_params

Feature/fix emr server params