re #fix_7 add a new service to get seller user by id
re #fix_7 add secure key for pyramid authentication session management
re #fix_7 add authentication management
re #fix_7 replace parameter id by selleruser_id in the service
re #fix_7 add logout feature in the template
re #fix_7 integrate authentication system to the home view
re #fix_7 integrate authentication system to the login view
re #fix_7 integrate security features
Merge pull request #9 from jean553/fix_7

Fix 7 - Integrate authentication login/logout features