- read gae db tutorial https://code.google.com/appengine/docs/python/gettingstarted/usingdatastore.html
- explore https://code.google.com/intl/cs/apis/maps/articles/geospatial.html example
- http://www.google.com/fusiontables/DataSource?dsrcid=1132473 ... sample fusion table (KML, exports)
- create simple updating form to load big KML with data
- create simple REST (GET) service http://stackoverflow.com/questions/1788041/how-to-create-a-rest-service-with-google-app-engine-and-python/1789226#1789226
- implement encoding and decoding of coord bounds in URL string

Notes
=====
- live web http://ski-map.net/
- sample bounds: 61.3,37.8;35.5,-10.6; -> bounds/61.3/37.8/35.5/-10.6/
- harrachov sample bounds: 50.7917,15.4529;50.7625,15.4014 -> bounds/50.7917/15.4529/50.7625/15.4014/

http://localhost:8080/tracks/bounds/50.7917/15.4529/50.7625/15.4014/