Redo user migration rake to use models and support metadata
Redo user migration rake to use models and support metadata

CartoDB/cartodb,CartoDB/cartodb,splashblot/dronedb,CartoDB/cartodb,CartoDB/cartodb,CartoDB/cartodb,splashblot/dronedb,splashblot/dronedb,splashblot/dronedb,splashblot/dronedb