KRACOEUS-7120: creating interfaces for future apis, moving ArgValue, correctly mapping the numeric sortId
KRACOEUS-7120: mapping TbnPerson, retrieving KcPerson from BudgetPerson bo
KRACOEUS-7120: creating training stipend rate api, removing QueryList usage, fixing tests related to movement of ArgValue class
KRACOEUS-7120: removing unused method, fixing javadoc a per code review
KRACOEUS-7120: fixing code from code review
KRACOEUS-7120: fixing code from code review
KRACOEUS-7120: fixing a test
KRACOEUS-7120: more code review changes
Merge pull request #148 from leoherbie/s2s_service_api

S2s service api