Moved work to PROTObalancer.cs

Plugin settings are stored in the .cfg file by class name.
The compiler expects the file name to match the class name.
In order to avoid a legacy problem while testing the prototype,
the class name and file name had to be changed.
This is effectively a poor man's branch. Changes will eventually
be "merged" back into MULTIbalancer.cs.

Several settings had their names changed for clarity. Some settings
that were redundant were removed.