use new geometry in bety sites table #172
updates to script to load the database
script to create users for testing bety

See https://github.com/PecanProject/bety/issues/100
dumps on ebi no longer have carya user
Merge pull request #191 from PecanProject/GH-172-use-bety-geometry

use new geometry in bety sites table #172
Merge branch 'master' into pecan-inputs
final updates to use modeltypes

- created settings.update function to convert existing pecan.xml files
to newer format
- use model$type instead of model$model_type