Improved support for different provider ids on OPML import

Any attribute that is assigned to a provider in the OPML will now
be pulled in as a CDAIdentifier where the root is set to the attribute
name and the extension is set to the value of the attribute.
Merge pull request #119 from pophealth/improved_provider_import

Improved support for different provider ids on OPML import
Adding children to the show action on provider

If there are children providers for a provider that is requested via
show, they are now included in a child property.
Providing documentation with Apipie
Merge pull request #120 from pophealth/improved_provider_api

Improved provider API
Bumping the versions of HDS and QME
Merge pull request #121 from pophealth/bump_versions

Bumping the versions of HDS and QME
add test case for admin user defect
Fix the create admin user rake task
Merge branch 'admin_rake_defect'

Rebasing and merging pull request #118