Made the state of the voting/review period and when they start/stop more visible and more helpful

I added a more helpful and visible message about when the review/voting periods start/stop to the top of the respective tabs. 

I also moved the voting summary underneath the voting form again. I thought that pull request got accepted, but maybe not. Maybe I did something dumb with git? I can never tell. ¯\_(ツ)_/¯

![screen shot 2014-10-07 at 12 25 35 pm](https://cloud.githubusercontent.com/assets/1054089/4551688/628a42c2-4e75-11e4-9d46-b23a71fc5d31.png)
![screen shot 2014-10-07 at 12 26 07 pm](https://cloud.githubusercontent.com/assets/1054089/4551690/6422c06e-4e75-11e4-93bc-3d6c60243dd3.png)