FirstName and LastName added to users model
An admin can Add users
An admin can Edit users information like, name, roles, password
An admin can Active/Desactive a user
partial to show form errors
Routes changed to set correct sign_in page as defautl and Dashboard page for authenticated users.

Set route to active a user via patch method
Show users list to be administered by an admin
footer fixed
some menu options added
layout fixed
unnecessary links deleted
firt_name and last_name field added to the new and edit view
active action added to change the status of an user