fix(config): new_client without project now does not read project fro…

…m config

When `new_client` function was called with `with_project=False`, it
could still read project_id from the config file. So, if first user is
part of a Project but second user (second login) is not, it can raise an
exception.

This issue is fixed in this commit.

Resolves #49

riocli/config/config.py

@@ -73,6 +73,9 @@ def new_client(self, with_project: bool = True) -> Client:
         if with_project and project is None:
             raise NoProjectSelected
 
+        if not with_project:
+            project = None
+
         return Client(auth_token=token, project=project)
 
     def get_auth_header(self) -> dict: