Turn off audio feature of app. Not needed.
Added entity service objects and categories, and other miscellaneous changes.

Checking for Internet connection was added to a “Util” object.

Person and Address categories have some handy getter methods for
address and name formatting.

Person and Address service objects handle the talking to the database.
Drastically simplifies the code handling fetch/save/delete calls to
database.

These changes also drastically reduce code duplication.