Add additional resources and update group and jig with _links property [1/1]

Add additional resources and update group and jig with _links property


 doc/devguide/api/attrib.md     |  217 +++++++++++++++------------
 doc/devguide/api/barclamp.md   |  321 +++++++++++++++++++++-------------------
 doc/devguide/api/group.md      |  111 ++++++++++++++
 doc/devguide/api/jig.md        |  122 +++++++++++++++
 doc/devguide/api/nodes.md      |  144 ++++++++++++++++++
 doc/devguide/api/role_types.md |  110 ++++++++++++++
 doc/devguide/api/roles.md      |  141 ++++++++++++++++++
 doc/devguide/api/snapshots.md  |  129 ++++++++++++++++
 8 files changed, 1051 insertions(+), 244 deletions(-)

Crowbar-Pull-ID: 21e2f728cda277ee7805a078d0e185b6c2a4a528

Crowbar-Release: development