Saved places history and style issues; fill color follow-on

[justin-bits]

1. Border drop down doesn't show a preview of the selected border on Edit. This preview isn't visible until expanding the drop down.
2. When editing a non-point place style via the Layers dialog, the Point/Square/Triangle drop down, Fill Style, and Border options shouldn't be available.
3. Edit Place dialog doesn't write to history.
4. Undo shortcut not working after changing Border. Seems to be a focus issue as the change is going into the history and undo/redo do work after changing focus to the map or some other element.
5. Border not retained through export/import.
6. On importing non-point saved places from a CSV, Go To zooms completely out and pans the globe away from the places.
7. Feature actions with solid border will not override features that have a non-solid border.

[bradh]

Also changing styles from Icon to Point/Triangle/Square doesn't get reflected in the styling used for export.

To reproduce, create a new Place, set the style to Icon and pick a recognisable icon (I used a W paddle). Then edit the Place to change it back to Point. Export the Place, and inspect the generated KML. Note the <Icon><href>https://maps.google.com/mapfiles/kml/paddle/w.png</href></Icon> or similar.

I don't yet understand the logic, but it seems like the export styling is being maintained in some kind of parallel state, and only occasionally gets updated.