Move initial setup from seeds.rb to bootstrap rake task

#515

db/seeds.rb

@@ -1,36 +1,2 @@
 # This file should contain all the record creation needed to seed the database with its default values.
 # The data can then be loaded with the rake db:seed (or created alongside the db with db:setup).
-
-ActiveRecord::Base.transaction do
-  registrar = Registrar.create!(
-    name: 'Test',
-    reg_no: '1234',
-    street: 'test',
-    city: 'test',
-    state: 'test',
-    zip: '1234',
-    email: 'test@domain.tld',
-    country_code: 'US',
-    code: 'US1'
-  )
-
-  registrar.accounts.create!(account_type: Account::CASH, currency: 'EUR')
-
-  ApiUser.create!(
-    username: 'test',
-    password: 'testtest',
-    identity_code: '51001091072',
-    active: true,
-    registrar: registrar,
-    roles: ['super']
-  )
-
-  AdminUser.create!(
-    username: 'test',
-    email: 'test@domain.tld',
-    password: 'testtest',
-    password_confirmation: 'testtest',
-    country_code: 'US',
-    roles: ['admin']
-  )
-end