Adding map edit

We can double click on the map, to enter edit much like with a paragraph.

There are issues with using `focusout` to detect leaving the map (the event does not fire), so `mouseout` is used instead.

While, to create a map, you need to enter something in the textbox that is presented by the factory, it is currently possible to delete the caption. This leaves a very slim handle on the bottom of the map to drag it by, but with *Map Caption* when the map is reloaded (currently).

Currently, there is not a way to map story item.