databases folder missing for the example app todo #1
Description
By running the py4web-example-apps I get the following error message for the todo app:
FileNotFoundError: [Errno 2] No such file or directory: 'C:\\github\\py4web-example-apps\\apps\\todo\\databases\\sql.log'
The app todo is minimalistic, there is only init.py with
```
db = DAL(
"sqlite://storage.db", folder=os.path.join(os.path.dirname(file), "databases")
)
db.define_table("todo", Field("info"))
db.commit()
In a new Installation the folder "databases" ist not present. Perheaps the issue can be solved so:
from py4web.core import required_folder
db = DAL(
"sqlite://storage.db", folder=required_folder(os.path.dirname(file), "databases")
)
db.define_table("todo", Field("info"))
db.commit()