Adding a definition(ObsAfterPeriodOfTimeFromEncounterDate) which giving
an obs after a defined period of time of encounter.
and some changes on current definitions evaluator
(FirstStatePatientEvaluator and MostRecentProgramWorkFlowSateEvaluator)
Merge branch 'master' of https://github.com/openmrs/openmrs-module-rowperpatientreports.git