Make authentication spec conform to 80 character line limit.
Add test for student registration when student has a two-word last name.
Fix indentation in student model.
Use new hash syntax for the autofocus key in the personal_information portion of the sign up form.
Fix indentation in teacher model.
Remove extraneous validation in Teacher model.
Fix formatting of Teacher and Student model.
Fixes #27.
Fix check for empty/nil first/last name in Teacher and Student models.
Merge pull request #28 from graspapp/full-name

Fix full-name field. Fixes #18.