Adding map to search combo box

The map added is using official geoadmin API. The all-in-one search
can be made geo-aware (by checking the checkbox), meaning that
only results which correspond to current extent of map will be
returned.

Note that the geo-aware stuff can be rough on the edges as it is
based on quadindex. In certain regions, even a very small bounding
box (extent) can result in a very big quadrant chosen for the
search.

Removed geonames search from examples.