use :full_conference factory in the conference view specs

spec/views/admin/conference/new.html.haml_spec.rb

@@ -1,12 +1,14 @@
 require 'spec_helper'
 
 describe 'admin/conference/new' do
+  let(:conference) { build(:conference) }
+
   it 'renders the new template for the conference' do
     assign(:conference, Conference.new)
     render
     expect(rendered).to include('Basic Information')
-    assign(:conference, build(:conference))
+    assign(:conference, conference)
     render
-    expect(rendered).to include('The dog and pony show')
+    expect(rendered).to include(conference.title)
   end
 end