Simplify BroadcastMessage factory

Also make the feature tests less brittle.

features/admin/broadcast_messages.feature

@@ -6,7 +6,7 @@ Feature: Admin Broadcast Messages
     And I visit admin messages page
   Scenario: See broadcast messages list
-    Then I should be all broadcast messages
+    Then I should see all broadcast messages
   Scenario: Create a broadcast message
     When submit form with new broadcast message

features/steps/admin/broadcast_messages.rb

@@ -4,10 +4,10 @@ class Spinach::Features::AdminBroadcastMessages < Spinach::FeatureSteps
   include SharedAdmin
   step 'application already has admin messages' do
-    FactoryGirl.create(:broadcast_message, message: "Migration to new server")
+    FactoryGirl.create(:broadcast_message, :expired, message: "Migration to new server")
   end
-  step 'I should be all broadcast messages' do
+  step 'I should see all broadcast messages' do
     expect(page).to have_content "Migration to new server"
   end
@@ -27,10 +27,9 @@ class Spinach::Features::AdminBroadcastMessages < Spinach::FeatureSteps
   step 'submit form with new customized broadcast message' do
     fill_in 'broadcast_message_message', with: 'Application update from 4:00 CST to 5:00 CST'
-    click_link "Customize colors"
     fill_in 'broadcast_message_color', with: '#f2dede'
     fill_in 'broadcast_message_font', with: '#b94a48'
-    select '2018', from: "broadcast_message_ends_at_1i"
+    select Date.today.next_year.year, from: "broadcast_message_ends_at_1i"
     click_button "Add broadcast message"
   end

spec/factories/broadcast_messages.rb

@@ -6,7 +6,6 @@
 #  message    :text             not null
 #  starts_at  :datetime
 #  ends_at    :datetime
-#  alert_type :integer
 #  created_at :datetime
 #  updated_at :datetime
 #  color      :string(255)
@@ -18,10 +17,12 @@
 FactoryGirl.define do
   factory :broadcast_message do
     message "MyText"
-    starts_at "2013-11-12 13:43:25"
-    ends_at "2013-11-12 13:43:25"
-    alert_type 1
-    color "#555555"
-    font "#BBBBBB"
+    starts_at Date.today
+    ends_at Date.tomorrow
+
+    trait :expired do
+      starts_at 5.days.ago
+      ends_at 3.days.ago
+    end
   end
 end