Put the delegates.rb into a permanent storage and use environment variables.

[kaladay]

During the investigation involving #9 , I uncovered a serious problem.

The delegates.rb is not saved anywhere and changing an environment variable can cause the file to be altered automatically.

This is dangerous.

We should probably do this regardless of whether or not the decision from #9 is to use a Java Delegate.

These files should not be lost.

We also might want to convert the Ruby Delegate to utilize environment variables for the URLs so that they can be passed directly via the Docker container.

see: #3