Make test easier to follow

Checking the contents of the second page while on the second page makes
more sense than checking them after going back to the first page.

spec/features/legislation/proposals_spec.rb

@@ -61,11 +61,13 @@ feature 'Legislation Proposals' do
       first_page_proposals_order = legislation_proposals_order
 
       click_link 'Next'
+
       expect(page).to have_content "You're on page 2"
+      expect(first_page_proposals_order & legislation_proposals_order).to eq([])
 
       click_link 'Previous'
-      expect(page).to have_content "You're on page 1"
 
+      expect(page).to have_content "You're on page 1"
       expect(legislation_proposals_order).to eq(first_page_proposals_order)
     end