Merge pull request #1 from Fattouh92/hassaan

Hassaan
added form for manager to create user, and a button for it in the navbar, added uniqueness to username for user, new userscontroller to manage crud actions
added delete users
added rute for hassaan
migration for table status
Merge pull request #2 from Fattouh92/table_status_migration

migration for table status
modified table