title: ipywidget interactive hiding visibility
body: <p>I would like to make an interactive module with ipywidgets.
  So far so good but I'm stuck.
  I want to hide the visibility of a certain ipywidget object dependent on a certain situation, and I want my printed text to show up above the widget and stay there.</p>
  
  <pre><code>dropdown=widgets.Dropdown(
      options={'Coffee machine': 1, 'Washing machine': 2, 'Water Heater': 3, 'Heating System': 4, 'Dryer': 5, 'Oven': 6, 'Microwave': 7, 'Other':8},
      value=1,
      description='Apparaat:',
      )
  text_new=widgets.Text()
  def text_field(value):
      if(value==8):
          display(text_new)
          text_new.on_submit(handle_submit)
      else:
          text_new.visible(False) #Doesn't work but I want something like this
  print("Today you had an increase in electricity consumption, would you like to name this device?") #This just be above the dropdown menu and be stuck
  i=widgets.interactive(text_field, value=dropdown)
  display(i)
  </code></pre>
  
  <p>What this does now:
  When "Other" is checked in the dropdown menu, a text box appears where the user can type something.
  However, when checking another machine, the text box stays there.
  I just need a "hide" function but I can't seem to find one that works.</p>
  
  <p>Also, after checking another option on the dropdown, the print dissapears, not coming back.</p>