Fix percentage on mobile polls

app/views/status_messages/_poll.mobile.haml

@@ -10,7 +10,7 @@
         .result-head
           - percentage = 0
           - if poll.participation_count > 0
-            - percentage = (answer.vote_count / poll.participation_count * 100).round
+            - percentage = (answer.vote_count.to_f / poll.participation_count * 100).round
           .percentage.pull-right
             = "#{percentage}%"
           .answer

spec/integration/mobile_posts_spec.rb

@@ -11,6 +11,15 @@ describe PostsController, type: :request do
       expect(response.body).to match(/div class='poll'/)
       expect(response.body).to match(/#{sm.poll.poll_answers.first.answer}/)
     end
+
+    it "displays the correct percentage for the answers" do
+      alice.participate_in_poll!(sm, sm.poll.poll_answers.first)
+      bob.participate_in_poll!(sm, sm.poll.poll_answers.last)
+      get "/posts/#{sm.id}", format: :mobile
+
+      expect(response.status).to eq(200)
+      expect(response.body).to match(/div class='percentage pull-right'>\n50%/)
+    end
   end
 
   context "with a location" do