Adding skeleton code to display a button through both console and gui
installations
Implementing skeleton to call button actions.
Remove redundant prompt method from the ConsoleField class. This prompt
method is handled by our Console class.
Use reflection to pass InstallData to the button action.
- Ensure to always use a GUIPrompt for GUI button events.
- Ensure to only print success message in console if user has selected
  to press button
Merge branch 'master' into button
Merge pull request #250 from mtjandra/IZPACK-1144

[IZPACK-1144] - New button field