fixes #832 - adds parameterized class support

Credits:
This patch is based on the original work of Olivier Favre
<olivier@yakaz.com> many many thanks!

• import class parameters, and try to understand their types
• support a complex matrix of environments, puppet classes and their...

fix failing 'show nested fact json' test in fact_values_controller_test

api v1 - config templates

fixes #1820 - Authenticate API calls via REMOTE_USER

This patch allows API requests authentication via REMOTE_USER
only if authorize_login_delegation and authorize_login_delegation_api
are enabled.

fixes #1799 moved REMOTE_ADDR verification to settings

api v1 - architectures controler and tests

api v1 - tests for operating systems controller

couple of test fixes after upgrading to a newer mocha/shoulda

fixes #1700 audit page performance improved

• Added auditabale name and associated name columns.
• Added username to audit table

fixes #1544 - Updating a host fails if you cannot reach the SOA nameservers