create a base signup api requiring error handling
handle parameter absence errors
handle parameter absence errors
ends up sign up test
csrf_exempt is attatched
change csrf_exempt placement
recover model
implement get user list
apply serializer onto  get /users/
apply serializer onto  get /users/
serialize Profile model at get of /users/
finish get /users/
implement login
finishi the implementation of login and signup
Merge branch 'f_signup_error_handling' into develop