adds specs for many tags in a budget investment

spec/features/tags/budget_investments_spec.rb

@@ -36,6 +36,18 @@ feature 'Tags' do
     end
   end
 
+  scenario 'Index shows up to 5 tags per proposal' do
+    create_featured_proposals
+    tag_list = ["Hacienda", "Economía", "Medio Ambiente", "Corrupción", "Fiestas populares", "Prensa"]
+    create :budget_investment, heading: heading, tag_list: tag_list
+
+    visit budget_investments_path(budget, heading_id: heading.id)
+
+    within('.budget-investment .tags') do
+      expect(page).to have_content '1+'
+    end
+  end
+
   scenario 'Show' do
     investment = create(:budget_investment, heading: heading, tag_list: 'Hacienda, Economía')