fixes #2250 API v2 add/remove puppetclasses from hosts and hostgroups

fixes #2299 - Parameters Controller (API v2) can reset parameters (delete them all)

fixes broken build

one extra / unused test was added by mistake

fixes #1988 - CRUD Actions for nested parameters for host, domain, hostgroup, os

e.g.

GET /api/domains/6/parameters
POST /api/hosts/6/parameters
PUT /api/hostgroups/6/parameters/100
DELETE /api/operatingsystems/6/parameters/100

fixes #2239 API v2 CRUD for locations and organizations and added nested loc/org

v2 api for configuration_templates and template_combinations

fixes #1814 - converts sp_* attributes into a BMC interface class

this patch also includes the following

• added a new interfaces table, and STI objects to represent a NIC, BMC, Managed
  and a bootable interface.
• refactored DHCP/DNS orchestation code, so they can work on the...

fixes #1890 api host status

fixes #1834 to get foreman running under ruby 1.9.3

added compute resource actions and tests