built user sign up and authentication
updated user sign up to show error messages encountered during sign up
made associations between users and subdivisions
added log out button
logged in user can create a subdivision
displays message when non-logged-in user tries to take an action that requires log in
user can see all subdivisions
added log in button when user is not logged in
users can assign users as managers of subdivisions
require user to be an admin to assign a user as a manager of a subdivision
user can add words
user can delete a word but only if they are an admin