PLD: add geodjango and use postgis db engine
PLD: add geom field for #110
PLD: add geospatial libs, move to install file, #110
PLD: quieter install
PLD: install db and create extension for postgis #110
PLD: add postgis install to ubuntu build per instructions for 9.3
PLD: add set geom helper on instance save #110
PLD: method for get all geopoints #110
PLD: migration to resave and add geoms #110
PLD: do not store the z dimension, not supported out-of-the-box