Further enhancements for authoring

[TheBizzle]

Just to get this documented somewhere, there are a number of things that I didn't address my initial draft of the authoring/interface-editing functionality for NLW. The ones on my mind are as follows:

• [x] Making plots editable (and then createable)
• [ ] Automatic resize/reflow of widgets, based on their content (like happens in desktop NL)
• [ ] Multi-widget move
• [ ] Multi-widget delete
• [ ] The existing touch control don't really seem to be operable in Safari
• [ ] Possible improved touch controls

People can pick up items from this list as they see fit, especially considering that some of this stuff really isn't very difficult.