OGM-408 Incorporating misc. review feedback

* Making OGM_ON an internal property
* Making QUERY_PARSER_SERVICE an internal property
* Avoiding repeated retrieval of CL service from registry
OGM-408 Moving configuration reader package
OGM-408 Making shared property constant holder types interfaces to allow mixing them into store-specific constant holders
OGM-207 Incorporating misc. review feedback

amend feedback 207

* Fixing comments
* Removing unused method
* Renaming tests "...ViaApi" -> "...Programmatically"
OGM-207 Updating copyright year for all files modified in 2014
OGM-207 Adding back some @author tags