Added User.properties property
Extracting column name constants
Extracted table name constant
Tweaking constants
Slight refactoring; making code a little more readable
Added makePropertiesQuery method
Added lookUpProperties method
Added tentative updateUserProperties method
Refactoring, geting rid of complex SQL
Added methods and tests to insert and update custom properties for User objects, stored in a hash table in the User object.
Tweaking test slightly.
Removed unused SQL records
Preparing test for usage of new SQL properties
Pretty major improvement for actor persistence.  Will have to tweak slightly for more extensibility but definitely an improvement.