Integrate user auth library

[bglusman]

No description provided.

[fcapovilla]

• Add Ueberauth and set it up with Guardian
• Add bcrypt passwords to users
• Remove Basic auth
• Add a roles system. Useful roles would be :guest, :worker, :admin and :superadmin
• Add a user CRUD page so users can be easily configured with their passwords and roles.
• Change the guest user behavior so the :guest role is used instead of the family members count.
• For now, only :superadmin users will be able to access the zones previously restricted by basic auth.

[bglusman]

Keep in mind this was created in zenhub which we may abandon but this is either the epic or part of the epic I forget :-)