Rework UI and MVC

[floomm]

View:

• New DataPanel, MemoryPanel and RegistersPanel classes

Controller:

• Contains the trace file now

Todo:

• [ ] I haven't updated the HookPanel since @riesentoaster is working on #13
• [ ] Remove getPlugin() & getTraceFile() methods in CreateController

[riesentoaster]

Some suggestions, no particular order:

• Rename Controllers to [NameOfControlledEntity]Controller
• Why do only some of the views have controllers? Especially some with still some logic in them? Where do we draw the line there?
• I'd suggest changing the method signatures in the controllers such that you can feed them directly as listeners, you might even want to rename them. Additional parameters could be passed in the constructor:

  btnClearTraceFile.addActionListener(e -> clearTraceFile()); //old
  btnClearTraceFile.addActionListener(controller::clearTraceFile); //new
  btnClearTraceFile.addActionListener(controller::clearTraceFileButtonListener); //renamed

• The UI handlers should not call logic functions on each other (clearTraceFile in CreatePanel) — that's why we have event listeners on the model.
• I would still have the YAML to MorionTraceFile converter in its own class, static or not. That doesn't really belong in the controller.