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...

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 #12180 - lookup_value presence validation moved from lookup_key

Global parameters can have empty values so smart variables that are also global should be allowed to accept empty values too.
The validation on lookup_value to make sure it isn't empty is in the LookupKey class therefore affecting both VariableLookupKey and PuppetClassLookupKey....

fixes #11862 - validating that casted hash is valid

Catch parse errors correctly under Ruby 1.9.3, and ensure the uncasted
value is displayed back in the UI if it fails to parse.

Fixes #12278 - make sure permission set is uniq for role

If default user has two or more filters with same permission (valid
setup), the verification of found collection failed. This patch
make the list uniq and the check correctly verifies whether all
permissions were found.

Fixes #12698 - Insufficient URL validation Smart Proxy and Medium.

Problem: The regex that validates smart proxies URLs only matches
'beginning of text'. This allows us to add just \n after a valid URL and
put anything after it. For instance, javascript:alert('hacked'). I...