Fixes #3122: 'column reference id is ambiguous' no longer appears on dashboard and report screens
rake console
fixes #2818 - validation of OS families in ptables
fixes #3239 - pxelinux spoofing on postgres now works
Fixes #3293 add FactoryGirl to tests
fixes #2895 - apply updates to environments on puppet class import
fixes #3369 - pin rubyzip to < 1.0.0 for Ruby 1.8
Changed the on content load direct method call to event

This change allow extending the on content load easly.
fixes #3274 moved config template to the new two-pane and add full screen editing
fixes #3140 - API to allow importing of puppet classes
fixes #3138 - move CR library loading into initializers, only show available providers
fixes #3266 - ensures there are no duplicate notifications
Added a uniqueness constraint on fact_values table on fact_name_id and host_id

  - Host::Base#merge_facts now assumes single-value facts
  - added tests
  - fixed an issue around fact value updates