Log out a user when the sub-task has finished

wrappers/modelverse.py

@@ -57,6 +57,7 @@ def __run_new_modelverse(address, username, password, callback, model):
     login(username, password)
     callback(model)
     exit_save(model)
+    user_logout()
 
 def __run_new_modelverse_activity(address, username, password, taskname, pipe, callback):
     init(address, taskname=taskname)