Added Google Hangout link.
Changed the Person class to User

experimental
changed the person class to user class

and used the is Registered
Added Facebook page link.
Added Facebook page link.
Added e-mail address.
Merge branch 'development' into no-invalid-email
fixed bug
Merge branch 'no-invalid-email' of https://github.com/peerlibrary/peerlibrary into no-invalid-email

Conflicts:
	server/lib/sympa.coffee