#39 WIP - initial efforts to restructure the way tuners and tuner

controllers manager sample buffer processing and channel management.
General cleanup across all modules to remove the executor from each
of the start() methods.  Removed the B100 tuner class since it's not
yet implemented.

src/spectrum/SpectralDisplayPanel.java

@@ -424,7 +424,7 @@ public class SpectralDisplayPanel extends JPanel implements Listener<ComplexBuff
             mTuner.getTunerController().addListener(this);
 
             //Register the dft processor to receive samples from the tuner
-            mTuner.addListener((Listener<ComplexBuffer>)mDFTProcessor);
+            mTuner.getSourceManager().addComplexBufferListener(mDFTProcessor);
 
             mSpectrumPanel.setSampleSize(mTuner.getSampleSize());