Move vote count maths to before XHR. Implement reversing on error.
Merge pull request #102 from askaway/responsivate-vote-count-on-click

Move vote count maths to before XHR. Implement reversing on error.
Merge branch 'master' of github.com:askaway/askaway into bugfix-inline-answering-for-401-and-422

Conflicts:
	app/assets/javascripts/controllers/questions.js