Dfoxpowell/modal oform signin signup

- Implement oform on signup/signin modals
- move oform globals to global js because it was not getting included before it was called in modal component JS --- Need Browserify!!!
- log response from signup to segment
- styling for error classes in helpers and modal scss
i'm just curious, have you tested this? i haven't actually tested the error event in oform. would be nice to confirm that it works. maybe if you could write an error request handler in the middleware and try it out.