Use double quotes for formatted strings.
Add the used logger to the start scripts.
Cast port to int for flask.

Flask expects a port to be an integer but if it is specified in a
configuration file it will not be cast.  This should be moved into the
parameters object at some point since we do store the typing information
for parameters.
Add flask paraemters for development environment.

We need to bind flask to all interfaces and specify its use in this
environment.  We also need to specify that the vagrant installation
mechanism should be used.