fixes #2121, #2069 - restrict importers and ENC to puppetmasters and users

CVE-2013-0171: report and fact importers parse YAML directly from the remote
host without authentication. Untrusted YAML can instantiate objects and be
used to exploit Foreman.

CVE-2013-0174: external nodes (ENC) output is available to any source and...

refs #1991 - Cache not cleared prevent location / org feature to show up

1. ensures settings cache is removed when app starts
we can't remove all cache, with Rails.cache.clear as that might lead to issues
with people using memcache with multiple foreman instances (e.g. we can clear...

fixes #2062 - Add max_trends setting

refs #2023 - always write using_storeconfigs default as a boolean

fixes #1995 - enable param class ENC by default on Puppet 2.6.5+

fixes #1994 - set vardir for puppet 3, use --configprint

When running Puppet 3 as a non-root user (i.e. foreman), both --confdir and
--vardir have to be specified as per Puppet #16637, else SSL settings dependent
on vardir will fail.

This adds a new puppetvardir setting used with puppetconfdir, and supports...

fixes #1915 - initialise Puppet in master context

Explicitly specify the run_mode as being 'master' to ensure the config is
parsed in a puppetmaster context.

fixes #1872 - Adds Puppet v3 support

fixed typo - "replay_address" should be called "reply_address"

added migration for typo in replay_adress variable

fixes #1901