```ruby
module JobsworthInitializer
  extend self

  ::Setting = Rails.application.config.jobsworth
  REQUIRED_DEFAULTS = {
    store_root:          Rails.root.join("store").to_s,
    custom_scripts_root: Rails.root.join("lib/scripts").to_s,
    from:                'fromnotset',
    domain:              'example.org',
    receiving_emails:    { secret: SecureRandom.hex(8) }
  }

  def init
    ensure_required_defaults
    load_version             if ENV['CI']
  end

private
  # Some settings are required, assign them default values if not already present
  def ensure_required_defaults
    REQUIRED_DEFAULTS.each do |key, value|
      next if Setting.key?(key)

      Setting[key] = value
      puts "WARNING: Could not find setting #{key.inspect} for #{Rails.env} environment in config/application.yml"
      puts "         Defaulting #{key.inspect} to #{Setting[key].inspect}"
    end
  end

  # Read jenkins build version if it exists
  def load_version
    version_file = Rails.root.join("config", "jenkins.build")
    Setting.version = File.read(version_file) if File.exists? version_file
  end

end

JobsworthInitializer.init

```

Allow creation of contacts by default. (Tests written before this switch was introduced need it to be set to true. This should be fixed so that tests cover the code on both values of the switch).
user
```ruby
module JobsworthInitializer
  extend self

  ::Setting = Rails.application.config.jobsworth
  REQUIRED_DEFAULTS = {
    store_root:               Rails.root.join("store").to_s,
    custom_scripts_root:      Rails.root.join("lib/scripts").to_s,
    from:                     'fromnotset',
    domain:                   'example.org',
    receiving_emails:         { secret: SecureRandom.hex(8) },
    contact_creation_allowed: true
  }

  def init
    ensure_required_defaults
    load_version             if ENV['CI']
  end

private
  # Some settings are required, assign them default values if not already present
  def ensure_required_defaults
    REQUIRED_DEFAULTS.each do |key, value|
      next if Setting.key?(key)

      Setting[key] = value
      puts "WARNING: Could not find setting #{key.inspect} for #{Rails.env} environment in config/application.yml"
      puts "         Defaulting #{key.inspect} to #{Setting[key].inspect}"
    end
  end

  # Read jenkins build version if it exists
  def load_version
    version_file = Rails.root.join("config", "jenkins.build")
    Setting.version = File.read(version_file) if File.exists? version_file
  end

end

JobsworthInitializer.init

```
assistant