Initial commit
Add Airport object
 Add a map change listener in MapsActivity
Add hashmap to hold markers
Add AirportQuery class

Implements url builder and results processing methods
Add google maps api key
[Working] Add UpdateMapMarkers

Only fetches first batch of results.
Update logging to show marker cache hits
[Working] Get all results using query bookmarks

Limit is set using MAX_BATCH_COUNT
[Working] Add alert showing total_rows count
[squash] clean up some cruft
Get total_rows only once
Stop making requests if all markers are received

Use total_rows == airport.size() as check.
Make config vars const