Removed duplicate admin attr
Added admin users and basic access control.

Still need to add support for editing other users (can only edit self). Only admins can add users.
Removed 'Destroy' from current user
Updated phone number formatting for strings
Added 'View' button for drivers.
Added path for show_drivers_path
Added "View" button for users
Added support for show_users_path
Merging of users into master
merging with fixed version