Require the user to drag the map after the place form is shown
- Set the center on user drag
- Prevent form submit if user has not set the location (dragged the map)
- Update the drag instructions and scroll to the top
DRYer CSS, fix typo in drag error message
Make sure that keyboard map pans also set the latlng on the place form view
3.11.17
Merge pull request #109 from openplans/require-map-drag

Require the user to drag the map before submitting a place