user update page
user edit restrictions
friendly forwarding to previous page after successful sign in
users index
faker and sample users generator
pagination on users index
simplify users index view
admin can delete other users
test for setting user admin attribute via direct patch request to Users#update
open gravatar edit link in new window
requirement that links to protected pages in header isn't shown to non-signed-in visitors
extract user create/edit form body into fields partial
block new and create actions for already signed-in users
requirement that friendly forwarding works only once
block admin from deleting himself