minor restyling
added setup settings for user testing
added code variables for testing
added class variables to verify status of user psw and code
finished test_create_user
added test for creating user with invalid username
added test for creating users with wrong passwords
added test for correct user activation
added test for user activation with invalid username
added test for user activation with invalid code
added test for deleting user
added test for deleting user with invalid username
mocking CmdMessageClient methods
mocking client_cmdmanager.take_input
fix added import client_cmdmanager