Subject: added Task scaffold

Author: Neilson
-generated scaffold for Task
subject: authentication
author: neilson
-added authentication from devise
-sign up works
subject: admin auth page
author: neilson
-added admin.html.erb
-updated routes in admin for signup, login, and logout
-changed type_task to accept integer instead of string in db
updated admin.html.erb
Add Task Type Constants
Author: Cole
Commit: Add a TYPES constant in the Task model for accessing task types throughout the app.