Add Edit user page; Create signin helper for tests; Add corresponding tests and proper link for user 'Settings'
Implement user's update action and add corresponding tests for succesful profile updates; Fix minor mistakes in form
Add authorization for editing and updating with its respective tests
Add authorization for right users to edit and update actions, and their corresponding tests
Add friendly forwarding and corresponding tests and helper methods
Add Users' index for signed-in users and corresponding tests, action, view and links
Add pagination with respective tests, gems, and a task for generating fake users
Add admin attribute to users
Finnish user edit, update, index and destroy actions