- remove geocomplete dependency, let people use meters/miles instead of Google Maps' "zoom" scale

- don't require lat/lng coordinates for specifying center
- consolidate redundant information between address and map scopes
- allow users to override autocomplete country scope
- autocomplete now puts local addresses at top of drop-down
- fix search->nearby->list->row_select centering bug
- fix list view not refreshing list on thin rows
- disable sliders when the min and max values are the same
- give users the option of writing their own infobox function if they
don't want to use Handlebars