Installed Devise
Added authentication features to AdminUser model
Added passwords to seeded admins
Added custom layout for login pages
Added version number for device and paperclip
Added email to district setup screen
Added e-mail to weak parameters list for district
Added aspects to intercept requests when authentication is needed.
Updated how the AdminUser object is gotten in the Admin Controller
Fixed display of people for central admins (name and email missing)
Changed sign-out to Devise link
Added password code for creation of new central and district users.
Merge branch 'admin_styles' into authentication
Merge branch 'master' into authentication

Conflicts:
	db/schema.rb
Fixed login routing and a central admin being able to edit their password.
Enabled central admins to change their password
Added nil check for ID that caused an issue when creating a new district admin
Added some comments around creating a district admin
District admins can edit their own password
Fixed issue with district admins being able to get to certain screens