Feature/scenario stops

This adds the ability to add/delete stops in scenarios

![Uploading 3.png . . .]()

![2](https://cloud.githubusercontent.com/assets/1977405/4955361/ba32bd24-6694-11e4-872c-86f08c873c29.png)

This function appears to be unused? If so, remove. Also not sure you'd want to be setting stopTimes to a function here anyways...?