Added basic user model.
Added validation to User email and index.
lowercased email.
Completed the User Model w/ password.
Merge branch 'feature/modeling-users' into develop
Added annotations.
Added some simple notes.
Setup User Profile view.
Finished section 7.1
Finished up through the end of  7.4.1
Finished user signup 7.4.3
Merge branch 'feature/sign-up' into develop
Configured Production to use SSL.