fixes #3167 - downgrade gettext_i18n_rails for gettext / 1.8 compat

(cherry picked from commit a503cfce76fe710e4a13de7a487a359164479d53)

Conflicts:
	bundler.d/i18n.rb
	foreman.spec
fixes #3142 - update ancestry due to dependency issue in f19

(cherry picked from commit 18722e769927f406d813fec1aed1b2d7c7f3b6a1)

Conflicts:
	foreman.spec
fixes #3160 - sanitize host/host group names in lookup_value associations (CVE-2013-4386)
Release 1.2.3
Merge branch '1.2-stable' into 'master'