MKT-696 -- Mobile MVP Homepage

## TODO
- [x] Insert graph background image
- [x] Insert company logo SVGs
- [x] Insert Illustrations in reasons section (blocked)
- [x] Email form with signup modal
- [x] Change font in company logo section
- [x] Test on IE
- [x] Fix company images on IE

### Things I don't like:
1) "Deliver your best customer experiences at every touchpoint on the web and native mobile apps" header on iPhone wraps the screen 3 times. Looks cluttered.