made it so code uses App.Config() method rather than App.cfg private variable

[reiver]

I am trying to decouple the code.
Some of the code feels very coupled.

But I am trying to do it (the decoupling) slowly and carefully.

I don't want to break things.

And I also don't want to create one massive pull-request.
But instead will create a set of smaller pull-requests for this (decoupling) that are easier to understand.

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I made it so code uses App.Config() method rather than App.cfg private variable.

This will make future decoupling work easier.