Create model classes and update model
Enable a module for the project
Initial attempt at import
Specify classes in the data model

Also use prefixed ObjC model class names
and fix Employee logic
Fix project file locations
Fix entity names and PSC use in data import

Also check for save errors
Fix "admin" key typo and optional relationship requirement
Implement update parsing
Index on uniqueId for Employee and PBR
Indicate failures
Speed up updates by storing employees in a dictionary.
Remove ineffective performance optimizations