Fixes #12083 - Set nic domain only on full match of fqdn domain

If there are domains that have subdomains, setting a host name that
contains an existing domain name will sometimes choose the wrong
domain for the host. This patch makes the nic set the domain only...

Fixes #12891 - search_by_params and search_by_user for host return correct results

Fixes #7230, #12021 - Upgrade to Rails 4.1.5

This commits upgrades Rails to Rails 4.1.5. See a description of the
changes included here, and go to the pull request in GitHub to see more
detailed explanations:

• Update gems to a Rails 4 compatible version, including dependencies...

Fixes #12748 - "Add Smart Variable" button does not change color on click

Fixes #12852 - override checkbox always enables default value when use_puppet_default is false

Fixes #12842 - Adding padding below use puppet default checkbox in puppetclass edit form

Refs #6007 - fixing safe_value for lookup key

Fixes #12828 - Hidden value checkbox enabled after override button is checked

Fixes #12827 - deconstantize resource only when needed

Fixes #12806 - adding merge_default to attr_accessible in lookup_key