adds Setting: minimum age to participate

app/models/user.rb

@@ -196,6 +196,10 @@ class User < ActiveRecord::Base
     @@username_max_length ||= self.columns.find { |c| c.name == 'username' }.limit || 60
   end
 
+  def self.minimum_required_age
+    (Setting['min_age_to_participate'] || 16).to_i
+  end
+
   def show_welcome_screen?
     sign_in_count == 1 && unverified? && !organization && !administrator?
   end

config/locales/settings.en.yml

@@ -37,3 +37,4 @@ en:
     meta_description: "Site description (SEO)"
     meta_keywords: "Keywords (SEO)"
     verification_offices_url: Verification offices URL
+    min_age_to_participate: Minimum age needed to participate

config/locales/settings.es.yml

@@ -37,3 +37,4 @@ es:
     meta_description: "Descripción del sitio (SEO)"
     meta_keywords: "Palabras clave (SEO)"
     verification_offices_url: URL oficinas verificación
+    min_age_to_participate: Edad mínima para participar

db/seeds.rb

@@ -94,3 +94,4 @@ Setting['mailer_from_address'] = 'noreply@consul.dev'
 
 # Verification settings
 Setting['verification_offices_url'] = 'http://oficinas-atencion-ciudadano.url/'
+Setting['min_age_to_participate'] = 16