Renamed date_received module to sample_received

Sample received now fetches a UUID

Sample received modifications

Sample received now moves name to Sanger Supplier Name.

Replaces name with a UUID

Fixed some critic errors

Refactored sample received to use request object
Refactored _create_supplier_sample_name in clarity elements to use
new private methods
Readded stamp to mapper
Renamed date_received to sample_received
Updated POD for sample_receive
Merge pull request #38 from jbeast/uuid_to_sample

Uuid to sample