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 #3975 - add audit to classes Domain, Subnet, SmartProxy, Role, Usergroup, AuthSource, Image, Bookmark that were not audited

fixes #3493 - check if auto user reg is allowed for auth source

fixes #2741 - rails 3 syntax

fixes #2422 Rails 3.2: before_destroy / dependent => :destroy ordering

fixes #2421 added missing has_many :hostgroups and missing :dependent => destroy

refactor AuthSourceLdap Class

cleanup the classes, as it was aweful ruby.
TODO: improve the logic between existing user and new users on the fly creaetion

fixes #899 - There are numerous typos and formatting issues with the code

Fixes #366 - Redmine authorization port

This is a major feature which provides RBAC authorization within Foreman
a mental note to myself - never ever work on large commits

Fixes #232 - Removes AS from Users page

The password verification test has not yet been implemented but will get done in AuthSourceInternal fix
All tests now pass These tests now work whether settings[:ldap] is enabled or not
Plus whitespace fix

Squashed commit of the following:

commit c4382aeea5d72402bcbf3049d3c08f74792ca379
Author: Ohad Levy <ohadlevy@gmail.com>
Date: Thu Oct 15 22:03:26 2009 +0800

disable ldap by default

commit 685baf5f2c78128feebcbeed6910b131a072a81b
Author: Ohad Levy <ohadlevy@gmail.com>...