Mark track state as not null and add default value

The regular tracks are marked as 'confirmed'

spec/controllers/admin/tracks_controller_spec.rb

@@ -80,6 +80,10 @@ describe Admin::TracksController do
       it 'creates new track' do
         expect(Track.find(assigns(:track).id)).to be_a Track
       end
+
+      it 'the new tracks has the correct attributes' do
+        expect(assigns(:track).state).to eq 'confirmed'
+      end
     end
 
     context 'save fails' do

spec/factories/tracks.rb

@@ -4,6 +4,7 @@ FactoryGirl.define do
     description { Faker::Lorem.sentence }
     color { Faker::Color.hex_color }
     short_name { SecureRandom.urlsafe_base64(5) }
+    state 'confirmed'
     program
 
     trait :self_organized do