Fix more color matching and new coach image

Made primary buttons match orange join us buttons. Added new coach graphic and tweaked quote layout. Fixed sign up form state field style.
Yes. I totally agree. I cringed when I did it. Bootstrap wasn't being nice about overriding the color without for some reason. I was going to spend more time trying to figure it out, but I figured with a UX guy coming on board, we'll probably be reskinning a lot of things and that would be a good chance for us to consistently address styles, components and better overrides than this.