Fix check for claimed disk

We need to use NodeObject.unique_device_for() to get the right device
name when checking claimed disks, and we also need to pass just the
string ("sda"), not the whole disk metadata.
use @bc_name consistently

Replace "cinder" with @bc_name where it was used to designate the
current barclamp
Merge pull request #175 from vuntz/fix-claim-check

Fix check for claimed disk
Merge pull request #178 from mapleoin/bc_name

use @bc_name consistently
Renamed i18n file, added quotes and copyright
Merge pull request #180 from tboerger/feature/i18n-rename

Renamed i18n file, added quotes and copyright
Moved helper into barclamp namespace
Merge pull request #181 from tboerger/feature/helper-rename

Moved helper into barclamp namespace
add recipe to stop unused services
enable feature on HA nodes
typo fix