Small improvements

I run rubocop and he shows some formatting issues. I changed in the files helper.

And Rails renders automatically when you define empty method actions on controllers.

My first and a small contribution.
@dougdroper  Imho, the action definitions in only worthy when we need to add code to it, and Rails makes this more implicit, just to you focus more on the view than the action itself, and this is less code too, =D. What do you think about it?