Add fields to all specs

add_fields.rb

def insert_at(parent, pos, new_field)
  parent.viz_fields.all(:conditions => ['position >= ?', pos]).each do |child|
    child.position += 1
    child.save   
  end

  new_field[:position] = pos

  parent.viz_fields.create(new_field)
end

def add_fields(s, v)
  root = s.viz_field

  section = insert_at(root, root.viz_fields.length + 1, {:viz => v, :kind => VizField::TYPES::SECTION, :attr => 'section_analytics', :label => 'Analytics'})
  insert_at(section, section.viz_fields.length + 1, {:viz => v, :kind => VizField::TYPES::STRING, :attr => 'ga_client_account', :label => 'Google Analytics', :description => 'Enter your Google Analytics account ID to receive events from this product.'})
end

Viz.all(:conditions => { :published => true, :in_progress => false }).each do |v|
  pub_ver = v.versions.find_by_published(true)

  add_fields(pub_ver.viz_spec, v)

  working_ver = v.versions.find_by_number(pub_ver.number + 1)

  add_fields(working_ver.viz_spec, v)
end