Improvements to user organization field feature after code review

* Add newline to user organization spec according to test guide
* Remove unnecessary comments from user organization database migration

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

db/migrate/20160926145521_add_organization_to_user.rb

@@ -4,25 +4,8 @@
 class AddOrganizationToUser < ActiveRecord::Migration
   include Gitlab::Database::MigrationHelpers
 
-  # Set this constant to true if this migration requires downtime.
   DOWNTIME = false
 
-  # When a migration requires downtime you **must** uncomment the following
-  # constant and define a short and easy to understand explanation as to why the
-  # migration requires downtime.
-  # DOWNTIME_REASON = ''
-
-  # When using the methods "add_concurrent_index" or "add_column_with_default"
-  # you must disable the use of transactions as these methods can not run in an
-  # existing transaction. When using "add_concurrent_index" make sure that this
-  # method is the _only_ method called in the migration, any other changes
-  # should go in a separate migration. This ensures that upon failure _only_ the
-  # index creation fails and can be retried or reverted easily.
-  #
-  # To disable transactions uncomment the following line and remove these
-  # comments:
-  # disable_ddl_transaction!
-
   def change
     add_column :users, :organization, :string
   end

spec/requests/api/users_spec.rb

@@ -267,6 +267,7 @@ describe API::API, api: true  do
 
     it "updates user with organization" do
       put api("/users/#{user.id}", admin), { organization: 'GitLab' }
+
       expect(response).to have_http_status(200)
       expect(json_response['organization']).to eq('GitLab')
       expect(user.reload.organization).to eq('GitLab')