Support for Additional Employment History Flowback

The following Onboarding365 Employment History fields can now be configured in Onboarding365
flowback: startingPayRate, StartingPayFrequencyType, startingPayOther, endingPayRate,
endingPayFrequencyType, and endingPayOther.

Note the following fields flowback as their integer values and not their string values, this will be
resolved in a future release: StartingPayFrequencyType, and EndingPayFrequencyType.