wip #34: refactored tuners to take a tuner controller as an argument.

Removed frequency change listener framework from tuner so that the tuner
controller handles all frequency change interaction.

Updated tuner view to allow selecting tuners for main spectral display
and/or launching a new spectral display by clicking in the tuner table
cell.

src/source/tuner/TunerSpectralDisplayManager.java

@@ -35,7 +35,7 @@ public class TunerSpectralDisplayManager implements Listener<TunerEvent>
 			case REQUEST_MAIN_SPECTRAL_DISPLAY:
 				mSpectralDisplayPanel.showTuner( event.getTuner() );
 				break;
-			case REQUEST_SECONDARY_SPECTRAL_DISPLAY:
+			case REQUEST_NEW_SPECTRAL_DISPLAY:
 				final SpectrumFrame frame = new SpectrumFrame( mChannelModel,
 					mChannelProcessingManager, mSettingsManager, event.getTuner() );