some nulls changed to Scala Options
Merge branch 'T5' into dev
JSON generator code moved out of Http Server
getValueAsString is again just getValue and there is no getValue:AnyVal
todo update
T5 first try of using sbt: there was need to eliminate all 's' before strings... geez
T5 one more 's' & libs moved from subdirectiores to lib (sbt _unmanaged_ dependencies)