Added a manifest & study that deal with HMDMC numbers.

Added a particular HMDMC related study.
Ensure that HMDMC number is updated in samples.
Ensure that HMDMC number goes into created manifest.
Added a particular template that deals with HMDMC manifests.
Merge pull request #322 from mattdenner/add_hmdmc_manifest_uat

Added a manifest & study that deal with HMDMC numbers.
Merge remote-tracking branch 'sanger/uat' into HEAD