Multi is the default api for methods, it is not necessary to explicitly
decorate methods with it, adds clutter and most people use it because
they see that the rest of the code uses it.
Done with `find . -type f -name '*.py' | xargs sed -i '/@api.multi/d'`
Purpose
=======
When generating `Cash` bank journal on CoA import, it doesn't makes sense to have the `Check` payment method enabled by default
Specification
=============
When system automatically creates journals of bank and cash type when CoA is being installed,
1) type = "Bank"
- Manual -> Checked
- Check --> Checked
2) type = "Cash"
- Manual -> Checked
- Check --> Unchecked