show found submissions when searching on templates

spec/system/dashboard_spec.rb

@@ -49,5 +49,18 @@ RSpec.describe 'Dashboard Page' do
         expect(page).to have_current_path(edit_template_path(Template.last), ignore_query: true)
       end
     end
+
+    it 'searches be submitter email' do
+      submission = create(:submission, :with_submitters, template: templates[0])
+      submitter = submission.submitters.first
+
+      SearchEntries.reindex_all
+
+      visit root_path(q: submitter.email)
+
+      expect(page).to have_content('Templates not Found')
+      expect(page).to have_content('Submissions')
+      expect(page).to have_content(submitter.name)
+    end
   end
 end