Unknown event handler property warnings

[afercia]

To reproduce:

• run the standalone examples app and go to http://localhost:3333/
• go the the Content Analysis tab
• see error in the browser console:

Warning: Unknown event handler property `onButtonClick`. It will be ignored.
    in li (created by Context.Consumer)
	...

Also:

• go to the Wizard tab
• see error in the browser console (I seem to recall this is a long standing one):

Warning: Unknown event handler property `onTouchTap`. It will be ignored.
    in button (created by EnhancedButton)
    ...