fixes #1902 - audit changes to lookup keys and values/overrides

(cherry picked from commit 971fee795383d2f7dc757a91ceb46bd693e20a4d)

fixes #812 - new permissions model, user group role and nest support, role filters for better granularity

• Daniel Lobato <elobatocs@gmail.com>
• Joseph Magen <jmagen@redhat.com>
• Tom McKay <thomasmckay@redhat.com>
• Greg Sutcliffe <gsutclif@redhat.com>...

fixes #4393 - rename ancestry label to title

fixes #2726 - smart class parameter override fails validation

fixes #2741 - rails 3 syntax

fixes #3206 - prevent any user including admin from creating lookup_value with fdqn= or hostgroup= if host/hostgroup does not exist

fixes #3048 - Non Admin user fails to override parameters when creating new host

fixes #2985 - remove #as_json method from AR models since rabl views used for API

fixes #2945 - extend AR to add getter/setters *_name(s) for has_many/belongs_to associations

fixes #2386 - permission failure on create_lookup_value

Feature #2368 - i18n extracting strings

Make sure we're not merging nil in to_json

Options argument might be nil. Therefore it fails when trying to call {}.merge(options) (for example when recording examples with apipie).

removed lower() on default_scope to get tests to pass in postgresql

fixes #1887
fixes #1839

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...

fixes #1351 New smart variable and match cannot be entered at same time.

WIP rails3 migration

fixes #1148 - CRUD on lookup values via the API

fixes #322 Ability to add custom variables and multiple values resovled
in a dynamic Hierarchally order

This commits introduces the ability to define variables per puppet
class.

additionally, each class can have multiple values, depends on the host
which is requesting that variable....

fixes #208 - use nested_attributes for lookup parameters

fixes #141 - add support to extlookup kind of queries through foreman
usage:
wget -q -O - "http://foreman/lookup?key=ntpserver&order[]=my.domain&order[]=common"
if you want it in YAML, just add:
wget -q -O - "http://foreman/lookup?key=ntpserver&order[]=my.domain&order[]=common&format=yml"