UX Improvements & Feedback Form

This UX-focused branch:

- Improves the styles in MapSidebarView (e.g. smaller text)
- Improves the styles in LineSidebarView (more spacing)
- Adds and hooks up “delete” button in LineSidebarView
- Adds and hooks up “add new line” button in LineSidebarView
- Update the default headway to 15 min, and the speed to 12mph
- Removes the word "Start" from the HomeView for better copy
- Adds a feedback pill in the bottom left corner. Click to email us, or sign up for updates.

![screen shot 2014-05-13 at 10 37 04 am](https://cloud.githubusercontent.com/assets/1435836/2961311/3a7e7830-dac5-11e3-8877-56c99d7e48ea.png)