0.4.0 - Remove engine from runtime, cleanup nw/test setup, LogicBankUtils upgrade

Reported issues with the use of engine are fixed by removing such references from the runtime. This had affected creating APIs and Web Apps in Flask.

The cumbersome test setup has been simplified as described here.

To enable Logic Bank to be installed with prefixes, a new version of LogicBankUtils is used (0.6.) that supports wildcards, such as LogicBank*. Important if you are refreshing, you must update, e.g., like this

pip uninstall LogicBankUtils
pip install LogicBankUtils