Second priority updates

When I am done implementing features from this list, I will move on to the following requests:

• possible option to make font larger for category names at top of list and across bottom - This will require some UI redesign
  
• Consider making the mode toggle an onscreen button instead of a Menu item
• Make TODO mode a bit more informative about the state of the list
• A possibility to consider is to make EDIT and DO actions separate. - separate menu items available in Edit and TODO modes.