Partial Implementation of US1574:

Partial Implementation of US1574:

OCRepresentation is now provides simpler interface to setValue and getValue from the applications.
Applications doesn't have to go through attributeMaps in OCRepresentation.
OCRepresentation now supports serialization/deserialization for primitive attributes (numbers, booleans and strings) so application doesn't have to deal with strings.

Change-Id: I09d323fc624d87c0b2a3c9b510935a6d5907a11b