fixes #426 expose BMC information in foreman UI

Signed-off-by: Ohad Levy <ohadlevy@gmail.com>

This patch also adds an abstracted power management class for both VM
and BM

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

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

fixes #2420 - extract strings for i18n from JavaScript, various i18n fixes

Fixes #2461 - Allow user to not have a puppet proxy

Fixes #2459 - Create ProxyFeature methods from symbol name, lookup on real text

fixes #2401 - cannot create new admin user

fixes #2426 - translate model and column names to English

fixes #2475 - search hosts based on comments

fixes translator comment