```ruby
module Adminpanel
  class Engine < ::Rails::Engine
    isolate_namespace Adminpanel
  end

  class << self
  	mattr_accessor :analytics_profile_id,
    :analytics_key_path,
    :analytics_key_filename,
    :displayable_resources,
    :fb_app_id,
    :fb_app_secret,
    :twitter_api_key,
    :twitter_api_secret,
    :instagram_client_id,
    :instagram_client_secret

  	self.analytics_profile_id = nil
  	self.analytics_key_path = 'config/analytics'
  	self.analytics_key_filename = nil
  	self.analytics_account_email = nil
    self.twitter_api_key = nil
    self.twitter_api_secret = nil
    self.displayable_resources = [
      :analytics,
      :users,
      :galleries,
      :sections
    ]
    self.fb_app_id = nil
    self.fb_app_secret = nil
    self.twitter_api_key = nil
    self.twitter_api_secret = nil
    self.instagram_client_id = nil
    self.instagram_client_secret = nil
  end

  def self.setup(&block)
  	yield self
  end
end
```

Add analytics account email to setup
user
```ruby
module Adminpanel
  class Engine < ::Rails::Engine
    isolate_namespace Adminpanel
  end

  class << self
  	mattr_accessor :analytics_profile_id,
    :analytics_key_path,
    :analytics_key_filename,
    :analytics_account_email,
    :displayable_resources,
    :fb_app_id,
    :fb_app_secret,
    :twitter_api_key,
    :twitter_api_secret,
    :instagram_client_id,
    :instagram_client_secret,

  	self.analytics_profile_id = nil
  	self.analytics_key_path = 'config/analytics'
  	self.analytics_key_filename = nil
  	self.analytics_account_email = nil
    self.twitter_api_key = nil
    self.twitter_api_secret = nil
    self.displayable_resources = [
      :analytics,
      :users,
      :galleries,
      :sections
    ]
    self.fb_app_id = nil
    self.fb_app_secret = nil
    self.twitter_api_key = nil
    self.twitter_api_secret = nil
    self.instagram_client_id = nil
    self.instagram_client_secret = nil
  end

  def self.setup(&block)
  	yield self
  end
end
```
assistant