Add styling from HTML mockup for signin and signup.
Add loading for signup_signin stylesheet
Add logic for creating a new person from the form and making sure email is assigned acrossed user and person.
Add html structuring to fit with given scss file from mockup.
Remove signup from shared links as it was added to the top of the form.
Add test for person creation in accounts controller.
Merge branch 'master' of https://github.com/jaredsmithse/web